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2.
(c) every new mouli sudy
(d) certain new moon's day
Ans: (i) c, (ii) b, (iii) a, (iv) a, (v) c, (vi) b, (vii) b
B. Short/Long Answer Questions :
1. What is light ? Define it.
2. How does light make an object visible ?
3. Name two natural sources of light.
4. List two artificial sources of light.
5. Differentiate between luminous and non-luminous
bodies. Give two examples of each.
6. Is the moon a luminous object?
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Answer:
B
1 a substance which outputs lightness and avoids darkness is called diet eg.sun natural source,,tube light artificial source
2 because it outputs lightess(roshanee)
3 sun fire
4 tubelight bulb
5luminous -which outputs light
non luminous- which does not outputs light
6 no as moon obtain its light from sun
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