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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectMedium2 minQB

PhysicsMediumsingle choice

Photons are incident from vacuum on a transparent material with a refractive index n for a given wavelength. Determine the momentum of the incident photon, if its wavelength in the material is equal to $λ$ .

Options:

Answer:

Solution:

Frequency stays unchanged across the interface.

$λ_{0} = nλ$

Incident momentum is

$p_{0} = \frac{h}{λ _{0}} = \frac{h}{nλ}$

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: QB

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