Light — Advanced (reflection, refraction basics, dispersion, lens basics, visually challenged aids)

Grade 6 Science — Light — Advanced (reflection, refraction basics, dispersion, lens basics, visually challenged aids): 25 practice questions with instant scoring and explanations.

1. The law of reflection states that the angle of incidence equals the angle of:
2. When light bounces off a smooth surface like a mirror, it is called:
3. When light bounces off a rough surface in many directions, it is called:
4. Refraction is the bending of light when it:
5. A lens that is thicker in the middle than at the edges is a:
6. A convex lens acts as a:
7. A concave lens acts as a:
8. When white light passes through a prism, it splits into different colours. This is called:
9. The sequence of colours in a rainbow is:
10. Dispersion occurs because different colours of light have different:
11. A magnifying glass is an example of a:
12. Spectacles for a person with myopia (short-sightedness) use:
13. Spectacles for a person with hyperopia (far-sightedness) use:
14. A person with astigmatism has:
15. A Braille watch is a device that helps:
16. A talking clock is an aid for:
17. A screen reader is a device that:
18. When light travels from air into water, it bends towards the normal. This means water's refractive index is:
19. The critical angle is the angle of incidence at which light is:
20. An optical fibre works on the principle of:
21. A white object appears white because it:
22. A black object appears black because it:
23. The angle between the incident ray and the reflected ray is related to the angle of incidence by:
24. A concave mirror is used as a:
25. A convex mirror provides a: