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(a) Why are infrared waves often called ...

(a) Why are infrared waves often called heat waves? Explain.
(b) What do you understand by the statement, "Electromagnetic waves transport momentum"?

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Stating the formula
Explanation for trasport of momentum
Electromagnetic waves can set ( and sustain) charges in motion . Hence.they are said to transport momentum
(Also accept the following: Electromegnetic waves are known to exert ,radiation pressure. This pressure is due to the force associated with rate of change of momentum. Hence , EM waves tranport momentum)
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