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Question

Pinhole camera is an application of _________.

A
rectilinear propagation of light
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B
shadow formation
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C
reflection of light
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D
(a) and (c) above.
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Solution

The correct option is A rectilinear propagation of light
Light travels in a straight line (rectilinear path). Pinhole cameras work on the principle of rectilinear propagation of light.

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