What do we mean by the rectilinear propagation of light?

Light travels in a straight line.

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Light travels in a circular path.

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Light only travels in air.

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Light travels in a curved line.

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Solution

The correct option is A Light travels in a straight line.
Rectilinear propagation of light means that light travels in a straight line. It only changes its direction when it encounters a different medium while travelling.

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Define rectilinear propagation of light.

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