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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2020

PhysicsEasysingle choice

Light of frequency $1.5$ times the threshold frequency is incident on a photosensitive material, photoelectric current is emitted. If the frequency of light is halved and intensity is doubled, the photoelectric current becomes

Options:

Answer:

Solution:

$v_{1} = 1.5 v_{0}$

$v_{2} = \frac{v_{1}}{2} = 0.75 v_{0} < v_{0}$

$\Rightarrow$ photoelectric effect (P.E.E.) not possible.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2020

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