Question Paper
Class / Subject: Class 8 (ICSE) · Science
Chapter: Chapter 5 — Chapter 5: Light Energy
Time Allowed: 32 minutes
Max Marks: 16
1. What is the law of reflection? [1]
(A) Angle of incidence equals angle of reflection
(B) Light always bends
(C) Light disappears at surfaces
(D) Angles are always different
2. What uses the law of reflection? [1]
(A) Mirrors and periscopes
(B) Only prisms
(C) Only telescopes
(D) Nothing uses it
3. What is refraction? [1]
(A) Light bending between mediums
(B) Light bouncing off a surface
(C) Light disappearing
(D) Light splitting into colours
4. What is dispersion? [1]
(A) Splitting white light into colours
(B) Light bouncing off surfaces
(C) Light disappearing
(D) Light bending only
5. What causes dispersion? [1]
(A) A prism
(B) A mirror only
(C) A flat surface only
(D) Darkness
6. What natural phenomenon shows dispersion? [1]
(A) A rainbow
(B) A shadow
(C) An echo
(D) A reflection in a mirror
7. What optical device uses light principles? [1]
(A) A telescope
(B) A calculator
(C) A speaker
(D) A thermometer
8. Why study light phenomena? [1]
(A) To explain how optical devices and sight work
(B) No reason
(C) It's not useful
(D) Only for tests
9. What is the law of reflection? [1]
(A) Angle of incidence equals angle of reflection
(B) Light always bends
(C) Light disappears at surfaces
(D) Angles are always different
10. What uses the law of reflection? [1]
(A) Mirrors and periscopes
(B) Only prisms
(C) Only telescopes
(D) Nothing uses it
11. What is refraction? [1]
(A) Light bending between mediums
(B) Light bouncing off a surface
(C) Light disappearing
(D) Light splitting into colours
12. What is dispersion? [1]
(A) Splitting white light into colours
(B) Light bouncing off surfaces
(C) Light disappearing
(D) Light bending only
13. What causes dispersion? [1]
(A) A prism
(B) A mirror only
(C) A flat surface only
(D) Darkness
14. What natural phenomenon shows dispersion? [1]
(A) A rainbow
(B) A shadow
(C) An echo
(D) A reflection in a mirror
15. What optical device uses light principles? [1]
(A) A telescope
(B) A calculator
(C) A speaker
(D) A thermometer
16. Why study light phenomena? [1]
(A) To explain how optical devices and sight work
(B) No reason
(C) It's not useful
(D) Only for tests