....... are drawn on light rays to show the direction in which light travels.

RAYS

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ARROWS

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LINES

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LINE SEGMENTS

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Solution

The correct option is B ARROWS
ARROWS are used to specify the direction of propagation of a light.

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....... are drawn on light rays to show the direction in which light travels.

The correct option is B ARROWSARROWS are used to specify the direction of propagation of a light.

The correct option is B ARROWS
ARROWS are used to specify the direction of propagation of a light.