Assertion :Electromagnetic radiations exert pressure. Reason: Electromagnetic-waves carry both momentum and energy.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Electromagnetic radiation is composed of photons which have momentum( $λ / h$ ) and energy( $h ν$ ). When photon is incident on a surface, its momentum changes and hence, it exerts a force on the surface giving rise to radiation pressure. Thus assertion and reason are both correct and reason is the correct explanation of assertion.

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