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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsPhotoelectric effectMedium2 minQB

PhysicsMediumsingle choice

Statement-1 : When ultraviolet light is incident on a photocell, its stopping potential is $V_{0}$ and the light is maximum kinetic energy of the photoelectrons is $K_{max}$ . When the ultraviolet replaced by X-rays, both $V_{0}$ and $K_{max}$ increase.

Options:

Answer:

Solution:

X-ray photons have greater energy than ultraviolet photons

$K_{m a x} = h ν - ϕ$

and

$e V_{s} = K_{m a x}$

both increase Electron energy spread exists even with monochromatic light because of initial energies, depths and energy losses Statement 1 is true, statement 2 false

Stream:JEESubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: QB

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