Question

Monochromatic light from a point source is directed toward the sharp edge of a solid object. How does diffraction change the image that appears on a screen beyond the object?

A. The shadow forms with much sharper edges than would form otherwise.

B. Light that passes close to the edge of the object is absorbed, making the image darker.

C. Some light appears in the region where the object's shadow would form otherwise.

D. That shadow that forms becomes longer than the length of the object.

Answer 1

Due to diffraction, light bends as it passes around the edge of an object. This causes light to appear in shadow region.

Hence correct option is C, i.e., Some light appears in the region where the object's shadow would form otherwise.

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