Q.

What does rectilinear propagation of light mean?

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a

Bouncing back of light when it strikes a reflecting surface.

b

Bending of light when it travels from one medium to the other.

c

Travelling of light in a straight line.

d

Splitting of white light into seven colours.

answer is C.

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Detailed Solution

Light always travels in a straight line.
This property of light is called rectilinear propagation of light.

Therefore, 'Traveling in a straight line' is the correct response.

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What does rectilinear propagation of light mean?