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Q.

Which of the following statements about photon is incorrect?

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a

Photons exert no pressure.

b

Rest mass of photon is zero.

c

Momentum of photon is $\frac{h ν}{c} .$

d

Energy of photon is $h ν .$

answer is A.

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Detailed Solution

Photons move with velocity of light and have energy $h ν .$ Therefore, they also exert pressure.

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