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PhysicsModern PhysicsPhotoelectric effectEasy2 minPYQ_2020

PhysicsEasysingle choice

According to Einstein's photoelectric equation, the plot of the kinetic energy of the emitted photoelectrons from a metal $V_{s}$ the frequency, of the incident radiation gives a straight line whose slope

Options:

Answer:

Solution:

Einstein's photoelectric equation is

${K E}_{m a x} = h v - ϕ$ ...(i)

The equation of line is

$y = m x + c$ ...(ii)

Comparing above two equations

$m = h, c = - ϕ$

Hence, slope of graph is equal to Planck's constant (non-variable) and does not depend on intensity of radiation.

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Photoelectric effect

⏱ 2mℹ️ Source: PYQ_2020

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