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PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2005

PhysicsEasysingle choice

The pressure exerted by an electromagnetic wave of intensity $I$ (watt $/ m^{2}$ ) on a nonreflecting surface is [ $c$ is the velocity of light]

Answer:

Solution:

Pressure = Force $/$ area $I = \frac{Energy}{area-time} = \frac{F \cdot S}{A t} = \frac{F c}{A} I / c = P$

Stream:AIIMSSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2005

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