Question

Q1 short questions answers
1) What is light?
2) What do you understand by a source of light? ?
3) Differentiate between luminous and non-luminous objects giving two examples of each,
4) Define the following:
a) Transparent materials
b) Opaque materials
5) What is a ray of light?
6) What do you mean by rectilinear propagation of light?
7) Describe an activity to show that light travels in a straight line.
8) What is a shadow? How is it formed?
9) State the conditions required for a shadow to be formed.
10) Write the three characteristics of a shadow.
11) What is meant by reflection of light?
12) Explain the reflection from regular and irregular surfaces drawing ray diagrams.
13) With a ray diagram explain the formation of image by a plane mirror.​

Answer 1

Answer:

1) light is a form of energy which enables us to see the world around us..

3) objects like sun, stars, burning candle, glowing Tubelight , etc that give out their own light is called luminous

objects that do not emit light of their own like chair, table, etc are called non-luminous

4) transparent materials means the objects which allows the light the pass through them

opaque materials means the objects which don't allow the light to pass through it and block the light

sorry but right now I can tell u this much only

hope it helps u