Question

If the frequency of incident light falling on a photosensitive material is double then the kinetic energy of the emitted photoelectron will be

Answer 1

Answer:

If the frequency of incident light falling on a photosensitive material is doubled than the kinetic energy will have the value more than double of the initial kinetic energy.

Here's how..

Using einstein photoelectric equation: hv = w + KE

here h = plank's constant

v = frequency

w = work function

KE = kinetic energy

KE = hv - w

when frequency is doubled,

KE' = 2hv - w

KE' = 2(hv-w) + w

KE' = 2KE + w

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