Question

. Umbra and penumbra are clearly visible when :(a) the source of light is small and the object (opaque) is big(b) the source of light is big and the object (opaque) is small.(e) both source of light and the object are big and placed far apart.(d) both source of light and the object are small and placed nearer to each other.​

Answer 1

Answer:

Explanation:

d both source of light and the object are small and placed nearer to each other.