What is the role of aperture in pinhole camera ?

Sharpens the image

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Allows light to enter to form the image

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Diffracts light passing through it

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None of these

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Solution

The correct option is B Allows light to enter to form the image
A pinhole camera is a simple camera without a lens but with a tiny aperture,(aperture is nothing but the hole here) a pinhole – effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box.

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