Question

1. What is light?
2. Name some common sources of light.
3. What is the speed of light in vacuum?
4. Write down three characteristics of light.
5. Name two natural phenomena based on the property that light travels in straight lines.
6. State the laws of reflection.
7. Explain where would you see this sign and explain why is it written like this: 3WAJUAMA?
8. Explain how to read the following message which was found on some blotting paper: nosbo 16 om 199M
9. The angle between an incident ray and the mirror is 30°.
(a) What is the angle of incidence?
(b) What is the angle of reflection?
(c) What is the total angle turned by the ray of light?
10. What is a beam of light? Mention the different types of beams of light.
11. What are (a) regular (b) irregular reflections?
12. What happens to a ray of light that falls on a mirror at right angle?
13. Name a device based on the principle of reflection.​

Answer 1

Answer:

1. Light is a form of energy that affects our eyes to produce the sensation of vision.

2. Some common sources of light are 1)natural souces of light ,2)Artificial souces of light..

10. A group of light rays given out from a source is called a beam of light.

• a parallel beam,
• a divergent beam,
• a convergent beam