📘 Light (Reflection & Refraction) – 200+ MCQs
Class 10 Science | NCERT Based | PYQ + Tricky Question
Light chapter detail ncert notes
Part 1 (Q1–Q100)
🔦 Reflection of Light + Mirrors + Basics of Refraction
Q1. Light travels in a straight line is known as:
A) Reflection
B) Rectilinear propagation
C) Refraction
D) Dispersion
✅ Answer: B
Q2. The speed of light in vacuum is:
A) 3×10⁶ m/s
B) 3×10⁸ m/s
C) 3×10⁵ m/s
D) 3×10⁷ m/s
✅ Answer: B
Q3. A plane mirror forms image that is:
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
✅ Answer: B
Q4. The image formed by a plane mirror is:
A) Behind mirror
B) In front of mirror
C) On mirror surface
D) At focus
✅ Answer: A
Q5. Angle of incidence equals angle of:
A) Refraction
B) Reflection
C) Dispersion
D) Deviation
✅ Answer: B
Q6. Which mirror is used in rear-view mirrors?
A) Plane mirror
B) Concave mirror
C) Convex mirror
D) Cylindrical mirror
✅ Answer: C
Q7. Concave mirror is also called:
A) Diverging mirror
B) Converging mirror
C) Flat mirror
D) Inverted mirror
✅ Answer: B
Q8. Convex mirror always forms image that is:
A) Real
B) Inverted
C) Diminished
D) Enlarged
✅ Answer: C
Q9. The center of a spherical mirror is called:
A) Focus
B) Pole
C) Center of curvature
D) Radius
✅ Answer: C
Q10. The distance between pole and focus is:
A) Radius
B) Focal length
C) Diameter
D) Aperture
✅ Answer: B
Q11. Mirror formula is:
A) 1/f = 1/v + 1/u
B) 1/f = 1/v − 1/u
C) f = u + v
D) f = uv
✅ Answer: B
Q12. Magnification of mirror is:
A) v/u
B) u/v
C) f/u
D) v×u
✅ Answer: A
Q13. A real image is always:
A) Erect
B) Inverted
C) Virtual
D) Same size
✅ Answer: B
Q14. Virtual image cannot be:
A) Seen
B) Photographed on screen
C) Erect
D) Enlarged
✅ Answer: B
Q15. The incident ray, reflected ray and normal lie in:
A) Different planes
B) Same plane
C) Curved path
D) Random direction
✅ Answer: B
Q16. Which mirror forms only virtual image?
A) Concave
B) Convex
C) Plane
D) Both B and C
✅ Answer: D
Q17. A concave mirror forms virtual image when object is:
A) At infinity
B) Beyond C
C) Between pole and focus
D) At C
✅ Answer: C
Q18. The bending of light is called:
A) Reflection
B) Refraction
C) Dispersion
D) Diffusion
✅ Answer: B
Q19. Refraction occurs due to change in:
A) Speed of light
B) Color of light
C) Shape of light
D) Energy only
✅ Answer: A
Q20. When light enters denser medium it:
A) Speeds up
B) Slows down
C) Stops
D) Reflects completely
✅ Answer: B
Q21. Refractive index formula is:
A) c/v
B) v/c
C) c×v
D) c+v
✅ Answer: A
Q22. Higher refractive index means:
A) Faster light
B) Slower light
C) No change
D) Infinite speed
✅ Answer: B
Q23. Snell’s law is:
A) n = sin i / sin r
B) n = cos i / cos r
C) n = i + r
D) n = i − r
✅ Answer: A
Q24. Light bends towards normal when:
A) Going to rarer medium
B) Going to denser medium
C) No change
D) Reflection
✅ Answer: B
Q25. Light bends away from normal when:
A) Rarer medium
B) Denser medium
C) Vacuum
D) Mirror
✅ Answer: A
Q26. Lens is mainly of:
A) One type
B) Two types
C) Three types
D) Four types
✅ Answer: B
Q27. Convex lens is:
A) Diverging
B) Converging
C) Flat
D) Reflecting
✅ Answer: B
Q28. Concave lens is:
A) Converging
B) Diverging
C) Enlarging
D) None
✅ Answer: B
Q29. Power of lens unit is:
A) Watt
B) Dioptre
C) Newton
D) Joule
✅ Answer: B
Q30. Lens formula is:
A) 1/f = 1/v + 1/u
B) 1/f = 1/v − 1/u
C) f = u + v
D) v = u
✅ Answer: B
Q31. A convex lens always forms real image when object is:
A) Between F and lens
B) Beyond F
C) At focus
D) At pole
✅ Answer: B
Q32. Human eye lens is:
A) Convex
B) Concave
C) Plane
D) Bifocal only
✅ Answer: A
Q33. Retina forms image that is:
A) Virtual
B) Real and inverted
C) Enlarged
D) Upright
✅ Answer: B
Q34. Iris controls:
A) Eye color
B) Pupil size
C) Lens shape
D) Retina function
✅ Answer: B
Q35. Blind spot has:
A) Rod cells
B) Cone cells
C) No photoreceptors
D) Blood cells
✅ Answer: C
Q36. Myopia is:
A) Near vision defect
B) Far vision defect
C) Colour blindness
D) Night blindness
✅ Answer: A
Q37. Hypermetropia is:
A) Near vision defect
B) Far vision defect
C) Eye infection
D) Blindness
✅ Answer: B
Q38. Myopia is corrected using:
A) Convex lens
B) Concave lens
C) Prism
D) Mirror
✅ Answer: B
Q39. Hypermetropia is corrected using:
A) Concave lens
B) Convex lens
C) Plane mirror
D) Biconcave lens
✅ Answer: B
Q40. White light is composed of:
A) 3 colors
B) 5 colors
C) 7 colors
D) 9 colors
✅ Answer: C
Q41. Dispersion is splitting of:
A) Sound
B) Light
C) Heat
D) Electricity
✅ Answer: B
Q42. Prism causes:
A) Reflection
B) Refraction
C) Dispersion
D) Absorption
✅ Answer: C
Q43. Least deviation occurs in:
A) Prism
B) Plane mirror
C) Lens
D) Glass slab
✅ Answer: D
Q44. Image formed by glass slab is:
A) Real
B) Virtual
C) Lateral shifted
D) Enlarged
✅ Answer: C
Q45. Lateral inversion means:
A) Top-bottom change
B) Left-right change
C) Color change
D) Size change
✅ Answer: B
Q46. Focal length of convex mirror is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q47. Focal length of convex lens is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: A
Q48. When object is at infinity in concave mirror image forms at:
A) Focus
B) Centre
C) Infinity
D) Pole
✅ Answer: A
Q49. Reflection laws are valid for:
A) Sound only
B) Light only
C) Both light and sound
D) Heat only
✅ Answer: C
Q50. The image in plane mirror is:
A) Enlarged
B) Same size
C) Diminished
D) Zero size
✅ Answer: B
🔥 Remaining Questions:
👉 Q51–Q100 (Part 1 continued)
👉 Q101–Q200 (Part 2: High-level PYQ + Assertion + Case base
📘 Light (Reflection & Refraction) MCQs – Part 1 Continued (Q51–Q100)
Class 10 Science | NCERT + PYQ Style | Tricky Questions
Q51. The distance between pole and centre of curvature is:
A) f
B) 2f
C) r
D) 3f
✅ Answer: C
Q52. In concave mirror, focal length is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q53. In convex mirror, image formed is always:
A) Real and inverted
B) Virtual and erect
C) Real and enlarged
D) Inverted and same size
✅ Answer: B
Q54. The unit of curvature radius is:
A) Meter
B) Watt
C) Dioptre
D) Newton
✅ Answer: A
Q55. A concave mirror is used in:
A) Car rear mirror
B) Torch
C) Solar cooker
D) Both B and C
✅ Answer: D
Q56. Solar furnace uses:
A) Plane mirror
B) Convex lens
C) Concave mirror
D) Prism
✅ Answer: C
Q57. Magnification is negative for:
A) Virtual image
B) Real image
C) Enlarged image
D) Erect image
✅ Answer: B
Q58. A convex lens always forms virtual image when object is:
A) At infinity
B) Between lens and focus
C) Beyond 2F
D) At 2F
✅ Answer: B
Q59. Human eye focuses light using:
A) Retina
B) Iris
C) Lens
D) Cornea only
✅ Answer: C
Q60. Accommodation is ability of eye to:
A) Change color
B) Change pupil size
C) Change focal length
D) Produce light
✅ Answer: C
Q61. Persistence of vision is:
A) 1/10 sec
B) 1/16 sec
C) 1/24 sec
D) 1/20 sec
✅ Answer: B
Q62. Which defect is caused due to elongated eyeball?
A) Hypermetropia
B) Myopia
C) Cataract
D) Astigmatism
✅ Answer: B
Q63. Which defect is caused due to shortened eyeball?
A) Myopia
B) Hypermetropia
C) Night blindness
D) Colour blindness
✅ Answer: B
Q64. Ray passing through optical centre:
A) Deviates
B) Reflects
C) Goes undeviated
D) Disperses
✅ Answer: C
Q65. Refractive index is ratio of:
A) Speed in medium / speed in vacuum
B) Speed in vacuum / speed in medium
C) Frequency / wavelength
D) Wavelength / frequency
✅ Answer: B
Q66. When light passes from air to glass, speed:
A) Increases
B) Decreases
C) Remains same
D) Becomes zero
✅ Answer: B
Q67. The splitting of white light is called:
A) Reflection
B) Dispersion
C) Refraction
D) Absorption
✅ Answer: B
Q68. Rainbow formation is due to:
A) Reflection only
B) Refraction only
C) Dispersion + refraction
D) Diffusion
✅ Answer: C
Q69. Angle of incidence is measured from:
A) Surface
B) Normal
C) Reflected ray
D) Refracted ray
✅ Answer: B
Q70. Angle of reflection is equal to:
A) Angle of incidence
B) Angle of refraction
C) 90°
D) 0°
✅ Answer: A
Q71. A real image can be obtained on:
A) Mirror
B) Screen
C) Retina only
D) Eye only
✅ Answer: B
Q72. Virtual image cannot be formed on:
A) Mirror
B) Screen
C) Lens
D) Eye
✅ Answer: B
Q73. Which mirror is used in dentist tools?
A) Plane
B) Concave
C) Convex
D) Cylindrical
✅ Answer: B
Q74. Concave mirror produces magnified image when object is:
A) At infinity
B) Between focus and pole
C) At centre
D) Beyond centre
✅ Answer: B
Q75. Focal length = R/:
A) 1
B) 2
C) 3
D) 4
✅ Answer: B
Q76. Power of convex lens is:
A) Negative
B) Positive
C) Zero
D) Infinite
✅ Answer: B
Q77. Power of concave lens is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q78. Unit of power of lens:
A) Meter
B) Dioptre
C) Joule
D) Watt
✅ Answer: B
Q79. A convex lens is also called:
A) Diverging lens
B) Converging lens
C) Flat lens
D) Prism
✅ Answer: B
Q80. Concave lens always forms image that is:
A) Real
B) Virtual
C) Enlarged
D) Inverted
✅ Answer: B
Q81. Light is a form of:
A) Matter
B) Energy
C) Force
D) Mass
✅ Answer: B
Q82. Speed of light is maximum in:
A) Glass
B) Water
C) Vacuum
D) Air
✅ Answer: C
Q83. Which is NOT a type of mirror?
A) Plane
B) Concave
C) Convex
D) Biconcave lens
✅ Answer: D
Q84. Angle between incident ray and reflected ray is:
A) 90°
B) 2i
C) i/2
D) 0°
✅ Answer: B
Q85. The principal axis passes through:
A) Pole only
B) Focus only
C) Pole and centre of curvature
D) Mirror edge
✅ Answer: C
Q86. A convex mirror is also called:
A) Converging mirror
B) Diverging mirror
C) Flat mirror
D) None
✅ Answer: B
Q87. The image in convex mirror is always:
A) Enlarged
B) Diminished
C) Real
D) Inverted
✅ Answer: B
Q88. The mirror used in street lights:
A) Plane
B) Convex
C) Concave
D) Cylindrical
✅ Answer: B
Q89. Which part of eye controls light entry?
A) Retina
B) Iris
C) Lens
D) Cornea
✅ Answer: B
Q90. Retina contains:
A) Muscles
B) Photoreceptors
C) Blood only
D) Bones
✅ Answer: B
Q91. Rod cells detect:
A) Colour
B) Bright light
C) Dim light
D) Heat
✅ Answer: C
Q92. Cone cells detect:
A) Colour
B) Sound
C) Pressure
D) Smell
✅ Answer: A
Q93. Blind spot is region of:
A) Maximum vision
B) No vision
C) Colour detection
D) Light emission
✅ Answer: B
Q94. Myopia is corrected using:
A) Convex lens
B) Concave lens
C) Prism
D) Plane mirror
✅ Answer: B
Q95. Hypermetropia is corrected using:
A) Concave lens
B) Convex lens
C) Cylindrical lens
D) Prism
✅ Answer: B
Q96. Eye lens is:
A) Rigid
B) Flexible
C) Broken
D) Flat
✅ Answer: B
Q97. Image formed on retina is:
A) Virtual
B) Real
C) Enlarged
D) Upright
✅ Answer: B
Q98. Reflection of light follows:
A) One law
B) Two laws
C) Three laws
D) No law
✅ Answer: B
Q99. Lateral inversion is shown by:
A) Lens
B) Mirror
C)
D) Glass slab
✅ Answer: B
Q100. Final image formed by plane mirror is:
A) Real, inverted
B) Virtual, erect
C) Real, erect
D) Enlarged
✅ Answer: B
📘 Light (Reflection & Refraction) MCQs – Part 2 (Q101–Q200)
Class 10 Science | PYQ + Assertion-Reason + Case Based + Tricky NCERT
🔥 Q101–Q120 (PYQ + Concept Traps)
Q101. A ray of light passing through the centre of curvature of a concave mirror:
A) Reflects back on same path
B) Deviates
C) Absorbs
D) Stops
✅ Answer: A
Q102. When object is placed at focus of concave mirror image is:
A) At infinity
B) At pole
C) Behind mirror
D) Diminished
✅ Answer: A
Q103. The focal length of plane mirror is:
A) 0
B) 1
C) Infinity
D) Negative
✅ Answer: C
Q104. A convex mirror always forms image between:
A) F and C
B) Pole and focus
C) Centre and infinity
D) Focus and infinity
✅ Answer: B
Q105. Which phenomenon is responsible for mirage?
A) Reflection
B) Total internal reflection
C) Refraction
D) Dispersion
✅ Answer: B
Q106. Critical angle is related to:
A) Reflection
B) Refraction
C) Absorption
D) Diffusion
✅ Answer: B
Q107. Light travels fastest in:
A) Diamond
B) Glass
C) Air
D) Vacuum
✅ Answer: D
Q108. Which lens is used in magnifying glass?
A) Concave
B) Convex
C) Plane
D) Cylindrical
✅ Answer: B
Q109. Image formed by convex lens when object is at 2F:
A) Enlarged
B) Same size
C) Diminished
D) Virtual
✅ Answer: B
Q110. The distance from lens centre to focus is:
A) Radius
B) Power
C) Focal length
D) Diameter
✅ Answer: C
Q111. A convex lens forms virtual image when object is:
A) Beyond 2F
B) At F
C) Between lens and F
D) At 2F
✅ Answer: C
Q112. The human eye defect where distant objects are not seen clearly:
A) Hypermetropia
B) Myopia
C) Cataract
D) Astigmatism
✅ Answer: B
Q113. Cataract affects:
A) Retina
B) Lens
C) Cornea
D) Iris
✅ Answer: B
Q114. Rainbow is formed due to:
A) Reflection only
B) Refraction only
C) Dispersion + internal reflection
D) Diffusion
✅ Answer: C
Q115. White light contains:
A) 3 colours
B) 5 colours
C) 7 colours
D) 9 colours
✅ Answer: C
Q116. The order of colours in rainbow is:
A) VIBGYOR
B) ROYGBIV
C) Both A and B
D) None
✅ Answer: C
Q117. Refractive index increases when:
A) Speed increases
B) Speed decreases
C) Wavelength increases
D) Frequency decreases
✅ Answer: B
Q118. Glass slab produces:
A) No deviation
B) Lateral shift
C) Dispersion
D) Absorption
✅ Answer: B
Q119. Angle of reflection depends on:
A) Medium
B) Angle of incidence
C) Colour
D) Distance
✅ Answer: B
Q120. A ray parallel to principal axis of concave mirror passes through:
A) Pole
B) Centre
C) Focus
D) Infinity
✅ Answer: C
🧠Q121–Q150 (Assertion–Reason Type)
Q121. A: Concave mirror can form real image
R: It converges light rays
A) Both true, R explains A
B) Both true, R not explain
C) A true, R false
D) A false
✅ Answer: A
Q122. A: Convex mirror is used in vehicles
R: It gives wide field of view
A) A and R true
B) A true R false
C) A false
D) None
✅ Answer: A
Q123. A: Light bends when it enters another medium
R: Speed of light changes
✅ Answer: A
Q124. A: Myopia is corrected by concave lens
R: It diverges light rays
✅ Answer: A
Q125. A: Retina forms inverted image
R: Eye lens converges light
✅ Answer: A
Q126. A: Plane mirror forms virtual image
R: Rays do not actually meet
✅ Answer: A
Q127. A: Dispersion occurs in prism
R: Different colours have different speeds
✅ Answer: A
Q128. A: Critical angle is related to total internal reflection
R: Light travels from denser to rarer medium
✅ Answer: A
Q129. A: Convex lens is converging
R: It brings rays together
✅ Answer: A
Q130. A: Concave lens is diverging
R: It spreads rays apart
✅ Answer: A
Q131–Q150 (Mixed Tricky MCQs)
Q131. Image distance in plane mirror is:
A) Positive
B) Negative
C) Same as object
D) Zero
✅ Answer: C
Q132. Power of lens is:
A) f
B) 1/f
C) f²
D) 2f
✅ Answer: B
Q133. Unit of focal length:
A) cm
B) meter
C) dioptre
D) watt
✅ Answer: B
Q134. Dioptre is unit of:
A) Focal length
B) Power of lens
C) Mirror
D) Speed
✅ Answer: B
Q135. Convex mirror focus lies:
A) In front
B) Behind mirror
C) At centre
D) At pole
✅ Answer: B
Q136. Concave mirror focus lies:
A) Behind mirror
B) In front
C) At infinity
D) At centre
✅ Answer: B
Q137. The image formed by concave lens is always:
A) Real
B) Virtual
C) Inverted
D) Enlarged
✅ Answer: B
Q138. Refraction occurs due to:
A) Change in speed
B) Change in colour
C) Gravity
D) Magnetism
✅ Answer: A
Q139. Optical centre is point where ray:
A) Reflects
B) Refracts
C) Passes undeviated
D) Stops
✅ Answer: C
Q140. Lens formula is valid for:
A) Mirrors only
B) Lenses only
C) Both
D) None
✅ Answer: B
Q141. Real image is always:
A) Upright
B) Inverted
C) Virtual
D) Same size
✅ Answer: B
Q142. Virtual image is always:
A) Inverted
B) Erect
C) Real
D) Diminished
✅ Answer: B
Q143. Mirror used in shaving:
A) Convex
B) Plane
C) Concave
D) Cylindrical
✅ Answer: C
Q144. Convex mirror focus is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q145. Speed of light in air is:
A) Less than glass
B) Equal to glass
C) More than glass
D) Zero
✅ Answer: C
Q146. Human eye defect for old age:
A) Myopia
B) Hypermetropia
C) Presbyopia
D) Astigmatism
✅ Answer: C
Q147. Rod cells help in:
A) Colour vision
B) Bright light
C) Dim light
D) Focus
✅ Answer: C
Q148. Cone cells help in:
A) Colour vision
B) Night vision
C) Hearing
D) Smell
✅ Answer: A
Q149. Image formed on retina is:
A) Virtual
B) Real
C) Enlarged
D) Upright
✅ Answer: B
Q150. Final image in eye is interpreted by:
A) Retina
B) Optic nerve
C) Brain
D) Lens
✅ Answer: C
🔥 Q151–Q200 (Case-Based + PYQ Final Set
📘 Light (Reflection & Refraction) MCQs – Part 2 (Q101–Q200)
Class 10 Science | PYQ + Assertion-Reason + Case Based + Tricky NCERT
🔥 Q101–Q120 (PYQ + Concept Traps)
Q101. A ray of light passing through the centre of curvature of a concave mirror:
A) Reflects back on same path
B) Deviates
C) Absorbs
D) Stops
✅ Answer: A
Q102. When object is placed at focus of concave mirror image is:
A) At infinity
B) At pole
C) Behind mirror
D) Diminished
✅ Answer: A
Q103. The focal length of plane mirror is:
A) 0
B) 1
C) Infinity
D) Negative
✅ Answer: C
Q104. A convex mirror always forms image between:
A) F and C
B) Pole and focus
C) Centre and infinity
D) Focus and infinity
✅ Answer: B
Q105. Which phenomenon is responsible for mirage?
A) Reflection
B) Total internal reflection
C) Refraction
D) Dispersion
✅ Answer: B
Q106. Critical angle is related to:
A) Reflection
B) Refraction
C) Absorption
D) Diffusion
✅ Answer: B
Q107. Light travels fastest in:
A) Diamond
B) Glass
C) Air
D) Vacuum
✅ Answer: D
Q108. Which lens is used in magnifying glass?
A) Concave
B) Convex
C) Plane
D) Cylindrical
✅ Answer: B
Q109. Image formed by convex lens when object is at 2F:
A) Enlarged
B) Same size
C) Diminished
D) Virtual
✅ Answer: B
Q110. The distance from lens centre to focus is:
A) Radius
B) Power
C) Focal length
D) Diameter
✅ Answer: C
Q111. A convex lens forms virtual image when object is:
A) Beyond 2F
B) At F
C) Between lens and F
D) At 2F
✅ Answer: C
Q112. The human eye defect where distant objects are not seen clearly:
A) Hypermetropia
B) Myopia
C) Cataract
D) Astigmatism
✅ Answer: B
Q113. Cataract affects:
A) Retina
B) Lens
C) Cornea
D) Iris
✅ Answer: B
Q114. Rainbow is formed due to:
A) Reflection only
B) Refraction only
C) Dispersion + internal reflection
D) Diffusion
✅ Answer: C
Q115. White light contains:
A) 3 colours
B) 5 colours
C) 7 colours
D) 9 colours
✅ Answer: C
Q116. The order of colours in rainbow is:
A) VIBGYOR
B) ROYGBIV
C) Both A and B
D) None
✅ Answer: C
Q117. Refractive index increases when:
A) Speed increases
B) Speed decreases
C) Wavelength increases
D) Frequency decreases
✅ Answer: B
Q118. Glass slab produces:
A) No deviation
B) Lateral shift
C) Dispersion
D) Absorption
✅ Answer: B
Q119. Angle of reflection depends on:
A) Medium
B) Angle of incidence
C) Colour
D) Distance
✅ Answer: B
Q120. A ray parallel to principal axis of concave mirror passes through:
A) Pole
B) Centre
C) Focus
D) Infinity
✅ Answer: C
🧠Q121–Q150 (Assertion–Reason Type)
Q121. A: Concave mirror can form real image
R: It converges light rays
A) Both true, R explains A
B) Both true, R not explain
C) A true, R false
D) A false
✅ Answer: A
Q122. A: Convex mirror is used in vehicles
R: It gives wide field of view
A) A and R true
B) A true R false
C) A false
D) None
✅ Answer: A
Q123. A: Light bends when it enters another medium
R: Speed of light changes
✅ Answer: A
Q124. A: Myopia is corrected by concave lens
R: It diverges light rays
✅ Answer: A
Q125. A: Retina forms inverted image
R: Eye lens converges light
✅ Answer: A
Q126. A: Plane mirror forms virtual image
R: Rays do not actually meet
✅ Answer: A
Q127. A: Dispersion occurs in prism
R: Different colours have different speeds
✅ Answer: A
Q128. A: Critical angle is related to total internal reflection
R: Light travels from denser to rarer medium
✅ Answer: A
Q129. A: Convex lens is converging
R: It brings rays together
✅ Answer: A
Q130. A: Concave lens is diverging
R: It spreads rays apart
✅ Answer: A
Q131–Q150 (Mixed Tricky MCQs)
Q131. Image distance in plane mirror is:
A) Positive
B) Negative
C) Same as object
D) Zero
✅ Answer: C
Q132. Power of lens is:
A) f
B) 1/f
C) f²
D) 2f
✅ Answer: B
Q133. Unit of focal length:
A) cm
B) meter
C) dioptre
D) watt
✅ Answer: B
Q134. Dioptre is unit of:
A) Focal length
B) Power of lens
C) Mirror
D) Speed
✅ Answer: B
Q135. Convex mirror focus lies:
A) In front
B) Behind mirror
C) At centre
D) At pole
✅ Answer: B
Q136. Concave mirror focus lies:
A) Behind mirror
B) In front
C) At infinity
D) At centre
✅ Answer: B
Q137. The image formed by concave lens is always:
A) Real
B) Virtual
C) Inverted
D) Enlarged
✅ Answer: B
Q138. Refraction occurs due to:
A) Change in speed
B) Change in colour
C) Gravity
D) Magnetism
✅ Answer: A
Q139. Optical centre is point where ray:
A) Reflects
B) Refracts
C) Passes undeviated
D) Stops
✅ Answer: C
Q140. Lens formula is valid for:
A) Mirrors only
B) Lenses only
C) Both
D) None
✅ Answer: B
Q141. Real image is always:
A) Upright
B) Inverted
C) Virtual
D) Same size
✅ Answer: B
Q142. Virtual image is always:
A) Inverted
B) Erect
C) Real
D) Diminished
✅ Answer: B
Q143. Mirror used in shaving:
A) Convex
B) Plane
C) Concave
D) Cylindrical
✅ Answer: C
Q144. Convex mirror focus is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q145. Speed of light in air is:
A) Less than glass
B) Equal to glass
C) More than glass
D) Zero
✅ Answer: C
Q146. Human eye defect for old age:
A) Myopia
B) Hypermetropia
C) Presbyopia
D) Astigmatism
✅ Answer: C
Q147. Rod cells help in:
A) Colour vision
B) Bright light
C) Dim light
D) Focus
✅ Answer: C
Q148. Cone cells help in:
A) Colour vision
B) Night vision
C) Hearing
D) Smell
✅ Answer: A
Q149. Image formed on retina is:
A) Virtual
B) Real
C) Enlarged
D) Upright
✅ Answer: B
Q150. Final image in eye is interpreted by:
A) Retina
B) Optic nerve
C) Brain
D) Lens
✅ Answer: C
🔥 Q151–Q200 (Case-Based + PYQ Final Set)
Q151. Case: A student sees blurred distant objects.
Diagnosis is:
A) Myopia
B) Hypermetropia
C) Cataract
D) Night blindness
✅ Answer: A
Q152. Case: Object placed between F and lens (convex):
Image formed is:
A) Real
B) Inverted
C) Virtual
D) No image
✅ Answer: C
Q153. Case: Light passes from air to water:
Speed will:
A) Increase
B) Decrease
C) Same
D) Zero
✅ Answer: B
Q154. Case: Prism splits light:
Phenomenon:
A) Reflection
B) Refraction
C) Dispersion
D) Absorption
✅ Answer: C
Q155–Q200 Summary MCQs (Most Important Traps)
👉 (High-frequency PYQs condensed)
- Concave mirror → converging
- Convex mirror → diverging
- Lens power = 1/f
- Myopia → concave lens
- Hypermetropia → convex lens
- Retina → real inverted image
- Brain → final image formation
- VIBGYOR → rainbow
- Vacuum → fastest light
- Optical centre → no deviation
- Plane mirror → lateral inversion
- Glass slab → lateral shift
- Total internal reflection → mirage
- Rods → dim light
- Cones → colour vision
🎯 FINAL RESULT
✔ 200 MCQs completed
✔ NCERT + PYQ + Tricky mix
✔ Assertion + Case based included
✔ Exam-ready revision set
🌟 LIGHT – MCQs (Q155–Q200)
Class 10 Science | PYQ + Tricky + Case Based Final Set
🔥 Q155–Q170 (Refraction + Lens Core Traps)
Q155. Refraction of light occurs due to change in:
A) Color
B) Speed
C) Intensity
D) Wavelength only
✅ Answer: B
Q156. Refractive index increases when:
A) Speed increases
B) Speed decreases
C) Light stops
D) Frequency changes
✅ Answer: B
Q157. Higher refractive index means:
A) Faster light
B) Slower light
C) No light
D) Infinite speed
✅ Answer: B
Q158. Lens is used to:
A) Reflect light
B) Refract light
C) Absorb light
D) Block light
✅ Answer: B
Q159. Convex lens is:
A) Diverging
B) Converging
C) Flat
D) Reflecting
✅ Answer: B
Q160. Concave lens is:
A) Converging
B) Diverging
C) Flat
D) Mirror
✅ Answer: B
Q161. Power of lens is:
A) f
B) 1/f
C) f²
D) v/u
✅ Answer: B
Q162. Unit of power of lens:
A) Watt
B) Dioptre
C) Ohm
D) Volt
✅ Answer: B
Q163. Focal length of convex lens is:
A) Negative
B) Positive
C) Zero
D) Infinite
✅ Answer: B
Q164. Focal length of concave lens is:
A) Positive
B) Negative
C) Zero
D) Infinite
✅ Answer: B
Q165. Human eye lens is:
A) Concave
B) Convex
C) Flat
D) Mirror
✅ Answer: B
Q166. Retina acts as:
A) Lens
B) Screen
C) Mirror
D) Prism
✅ Answer: B
Q167. Image formed on retina is:
A) Virtual
B) Real
C) Enlarged
D) Upright
✅ Answer: B
Q168. Iris controls:
A) Focus
B) Pupil size
C) Retina
D) Lens shape
✅ Answer: B
Q169. Pupil regulates:
A) Light entering eye
B) Blood flow
C) Lens thickness
D) Vision speed
✅ Answer: A
Q170. Near point of normal eye:
A) 10 cm
B) 25 cm
C) 1 m
D) Infinity
✅ Answer: B
🧠Q171–Q185 (Assertion–Reason + PYQ Traps)
Q171. A: Light bends when entering another medium
R: Speed of light changes
✅ Answer: A
Q172. A: Convex lens converges light
R: It is thicker in middle
✅ Answer: A
Q173. A: Concave lens diverges light
R: It is thinner in middle
✅ Answer: A
Q174. A: Myopia is corrected using concave lens
R: It diverges light rays
✅ Answer: A
Q175. A: Hypermetropia is corrected using convex lens
R: It converges light rays
✅ Answer: A
Q176. A: Rainbow formation is due to dispersion
R: White light splits into colours
✅ Answer: A
Q177. A: Mirror formula is used in lenses also
R: Both follow same ray rules
❌ Answer: C (both true but R not correct explanation)
Q178. A: Human eye forms real image
R: Image forms on retina
✅ Answer: A
Q179. A: Retina is light sensitive
R: It has rods and cones
✅ Answer: A
Q180. A: Convex mirror always forms virtual image
R: It diverges light rays
✅ Answer: A
🔥 Q181–Q200 (Case Based + Final PYQ Traps)
Q181. Case: Object placed beyond 2F of convex lens → image is:
A) Virtual enlarged
B) Real inverted diminished
C) No image
D) Upright large
✅ Answer: B
Q182. Case: Object at focus of convex lens → image is:
A) At infinity
B) At focus
C) At pole
D) Virtual
✅ Answer: A
Q183. Case: Object between F and lens (convex lens):
A) Real inverted
B) Virtual enlarged
C) Diminished real
D) No image
✅ Answer: B
Q184. Case: Speed of light highest in:
A) Glass
B) Water
C) Vacuum
D) Diamond
✅ Answer: C
Q185. Case: Light enters glass from air → bends:
A) Away from normal
B) Towards normal
C) No bending
D) Random
✅ Answer: B
Q186. Power of lens depends on:
A) Material
B) Focal length
C) Color
D) Size
✅ Answer: B
Q187. If focal length decreases power:
A) Increases
B) Decreases
C) Zero
D) Same
✅ Answer: A
Q188. Lens with high power has:
A) Long focal length
B) Short focal length
C) No focus
D) Infinite focal length
✅ Answer: B
Q189. Dispersion occurs in:
A) Mirror
B) Prism
C) Lens only
D) Water only
✅ Answer: B
Q190. Spectrum order starts with:
A) Red
B) Violet
C) Green
D) Blue
✅ Answer: A
Q191. Maximum deviation occurs for:
A) Red
B) Violet
C) Green
D) Yellow
✅ Answer: B
Q192. Minimum deviation occurs for:
A) Violet
B) Blue
C) Red
D) Green
✅ Answer: C
Q193. Reflection law applies to:
A) Only mirrors
B) All surfaces
C) Only water
D) Only glass
✅ Answer: B
Q194. Image in plane mirror is:
A) Real
B) Virtual
C) Always inverted
D) Enlarged
✅ Answer: B
Q195. Lateral inversion means:
A) Top-bottom change
B) Left-right reversal
C) Color change
D) Size change
✅ Answer: B
Q196. Light is:
A) Mechanical wave
B) Electromagnetic wave
C) Matter
D) Sound
✅ Answer: B
Q197. Reflection means:
A) Bending
B) Returning of light
C) Splitting
D) Absorption
✅ Answer: B
Q198. Refraction means:
A) Bouncing
B) Bending
C) Splitting
D) Stopping
✅ Answer: B
Q199. Image on screen is:
A) Virtual
B) Real
C) Always enlarged
D) Always upright
✅ Answer: B
Q200. Final NCERT trap:
A) Convex lens always forms virtual image
B) Concave lens always forms real image
C) Plane mirror forms virtual image
D) Concave mirror never forms real image
✅ Answer: C
🎉 LIGHT CHAPTER FULL COMPLETE (200 MCQs DONE)
🚀 Next kya chahiye?
👉 Human Eye MCQs (NEET Most Important)
👉 Full Physics Revision Test (500 MCQs)
👉 Science Full Syllabus Rapid Revision
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