Light MCQs Class 8 Science
Light MCQs – CBSE Class 8 Science
Class: 8
Subject: Science
Section: Light
Topic: Light MCQs
Board: CBSE (Based on NCERT Syllabus)
Subject: Science
Section: Light
Topic: Light MCQs
Board: CBSE (Based on NCERT Syllabus)
1. Light travels in a:
Answer: c) Straight line
Explanation: This property is called rectilinear propagation of light.
Explanation: This property is called rectilinear propagation of light.
2. Objects that emit light are:
Answer: a) Luminous
Explanation: Example: Sun, candle, bulb.
Explanation: Example: Sun, candle, bulb.
3. Image formed by plane mirror is:
Answer: b) Virtual
Explanation: It cannot be obtained on a screen.
Explanation: It cannot be obtained on a screen.
4. Angle of incidence equals:
Answer: b) Angle of reflection
Explanation: This is the law of reflection.
Explanation: This is the law of reflection.
5. Periscope uses:
Answer: b) Reflection
Explanation: Plane mirrors reflect light.
Explanation: Plane mirrors reflect light.
6. Multiple reflections occur in:
Answer: a) Kaleidoscope
Explanation: Mirrors create patterns.
Explanation: Mirrors create patterns.
7. Lateral inversion means:
Answer: b) Sideways reversal
Explanation: Left appears right.
Explanation: Left appears right.
8. Smooth surfaces give:
Answer: b) Regular reflection
Explanation: Parallel rays remain parallel.
Explanation: Parallel rays remain parallel.
9. Rough surfaces produce:
Answer: b) Diffused reflection
Explanation: Rays scatter in many directions.
Explanation: Rays scatter in many directions.
10. Image distance equals object distance in:
Answer: b) Plane mirror
Explanation: Distances are equal.
Explanation: Distances are equal.
11. Shadow forms when light is:
Answer: b) Obstructed
Opaque objects block light.
Opaque objects block light.
12. Transparent objects allow:
Answer: c) Full light
Example: Glass.
Example: Glass.
13. Translucent objects allow:
Answer: b) Partial light
Example: Butter paper.
Example: Butter paper.
14. Laws of reflection are:
Answer: b) Two
Angle equality & same plane.
Angle equality & same plane.
15. Dentist uses:
Answer: b) Concave mirror
Gives enlarged image.
Gives enlarged image.
16. Rear‑view mirrors are:
Answer: b) Convex
Wider field of view.
Wider field of view.
17. Reflection occurs from:
Answer: d) All of these
All reflect light.
All reflect light.
18. Speed of light is highest in:
Answer: c) Vacuum
No obstruction.
No obstruction.
19. Mirror image writing is:
Answer: a) Lateral inversion
Sideways reversal.
Sideways reversal.
20. White light splits into colours due to:
Answer: b) Dispersion
Seen in rainbow/prism.
Seen in rainbow/prism.
