Question

differentiate between crude source and point source of light by giving diagrams of Shadows formed by them​

Answer 1

Answer:

Ans a) Point source is particularly localised emission or source of light at a point which decreases in proportiom to the inverse square of distance from the source while extended source are collection of such point sources of light together.

Ans b)The umbra is the center part or the darkest part of the shadow. The penumbra is an extended part of the shadow that is slightly lighter than the umbra where some or all of the light sources are obscured.

Explanation: