Question

describe formation of shadow when extended source of light is smaller than an opaque body​

Answer 1

Answer:

Shadow formation due to an opaque object larger than the extended source of light; the part of the shadow devoid of any light is called the umbra and the surrounding soft portion is called the penumbra.

Answer 2

1. Shadow formation due to an opaque object larger than the extended source of light; the part of the shadow devoid of any light is called the umbra and the surrounding soft portion is called the penumbra.