Question

What is number of a atmos in a body cubic unit cell of a monoatomic substance?​

Answer 1

Answer:

The simple device which forms a photograph-like image of a bright object on a screen is called pinhole camera.

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Pinhole camera is based on the principle that light travels in a straight line.

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The object like paper, wall, or ground on which a shadow is formed is called a screen.

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Images formed by a pinhole camera are upside down (inverted images).

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The inner surfaces of the pinhole camera are blackened because a black surface can absorb light rays. Thus, any extra light gets absorbed as it enters the camera.