Rectilinear propagation of light means light travels in a ____.

curved line

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straight line

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zig-zag path

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circular path

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Solution

The correct option is B straight line
Light travels in a straight line.
We call this rectilinear propagation of light.

The following experiment proves that light travels in a straight line.

If we shift any of the cardboards, we would not be able to see the candle clearly. They have to be perfectly straight.

Suggest Corrections

Beginnings	Endings
1. A pinhole camera is	(a) travelling of light in a straight line.
2. Moon and Venus are	(b) natural source of light.
3. Rectilinear propagation of light is	(c) give out light of their own.
4. Luminous objects	(d) based upon the principle of rectilinear propagation of light.
5. Glow-worm is a	(e) illuminating objects.