Question

4. The sharpness of shadow depends upon -------- of ---------source.​

Answer 1

Answer:

it is dependent upon the size of the light source

Explanation:

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Answer 2

Explanation:

The sharpness of the edges of a shadow (the penumbra) depends upon how big the light source is: small lights cast sharp shadows, large lights cast fuzzy shadows. The shape of a shadow depends on the object that's casting it, and the shape of the surface that it's cast upon.