Which of the following is incorrect about the properties of light?

Light is a form of energy.

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Light travels in a straight line.

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Light can travel through vacuum.

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Light needs a medium to propagate.

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Solution

The correct option is D Light needs a medium to propagate.
The light rays from the Sun reaches the Earth. So we can say that light can travel through the vacuum because outer space is nothing but a vacuum. We feel the heat from the rays of the sun. Thus, we can say that it is a form of energy. Also, as light forms shadow, we can say that it travels in a straight line.

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Similar questions

The correct statement is :

(a) Sound and light both require medium for propagation

(b) Sound can travel in vacuum, but light can not

(d) Sound and light both can travel in vacuum.

The property of light travelling in straight lines is called ____________ propagation.

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