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PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2020

PhysicsEasysingle choice

When an ultraviolet light is incident on a photocell, its stopping potential is $V_{0}$ and the maximum kinetic energy of the photoelectrons is $K_{m a x}$ . When $X$ -rays are incident on the same cell, then

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Answer:

Solution:

The frequency of $X$ - ray is higher than that of ultraviolet light.

Now, $K_{m a x} = h (v - v_{0})$ .

Hence $K_{m a x}$ increases as $v$ is increased.

Also $K_{m a x} = e V_{0}$ , where $V_{0}$ is the stopping potential.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2020

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