Question

B. Write one word for each of the following.
1. A substance/material that allows light to pass through it.
2. The substance that allows only a part of light to pass through it.
3. It fills the space between the opaque object and the screen.
4. It travels in a straight line with a speed of 3 x 10 m/s.
5. The ray of light that returns after falling on a mirror.
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Answer 1

Answer:

1. transparent.

2. semi-transparent

3. shadow

4. light ray

5. reflected ray

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