Question

explain in your word with diagram -a) formation of umbra alone b) formation of umbra and penumbra

Answer 1

Answer:

a) An "umbra" is the part of the shadow where all of the light from the source is blocked by the shadowing object. ... You get these when the light source is larger than a single point. These form because while some of the light from the source gets blocked by the shadowing object, not all of it does.

b) The region of complete shadow is called the umbra and the region of diffuse shadow is called the penumbra. These shadows are formed on the Earth during a solar eclipse and From the umbra we see a total eclipse while from the penumbra only a partial eclipse is visible.

Explanation:

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