Question

1)if the distance of point source of light from opaque body decreases , the size of umbra will a) increase b) decrease c)remain same d)first increase the decrease 2) the phenomenon that caused shadow is a) reflection b) refraction c) rectilinear propagation d) total internal reflection
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Answer 1

Answer:

1. ( c ) remain same.
2. ( b ) refraction.

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Answer 2

Answer:

the answer is decrease

Explanation:

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