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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2005

PhysicsEasysingle choice

Assertion : The energy $(E)$ and momentum $(p)$ of a photon are related by $p = E / c$ . Reason : The photon behaves like a particle.

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Answer:

Solution:

Momentum of a photon is given by $p = h / λ (by de Broglie hypothesis)$ Also the photon is a form of energy packet behave as a particle and having energy $E = h c / λ$ From (i) and (ii), $p = \frac{E}{c}$ or, $\frac{h v}{c}$ .

Stream:AIIMSSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2005

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