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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectMedium2 minQB

PhysicsMediumsingle choice

A parallel beam of light of intensity I is incident onto a perfectly reflecting plane mirror, at an angle of incidence $θ$ . The pressure on the mirror due to radiation is

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Solution:

Intercepted power is $I A cos θ$ Normal momentum change per reflected photon is $\frac{2 E _{γ} c o s θ}{c}$

$P = \frac{F _{n}}{A} = \frac{2 I cos ^{2} θ}{c}$

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: QB

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