1.
Rough surfaces can reflect

2.
The things which give off light are called

3.
If a light falls on a mirror it will

4.
A lot of heat energy and light energy is given off by a

5.
Mirror and diamond are considered

6.
Materials which doesn't allow any light to pass through them are called

7.
A tracing paper will make a shadow with less

8.
Long shadows with different positions are found when sun is low in western horizon in

9.
Man-made sources of light includes

10.
The shadow is short when the sun is overhead at

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