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If the frequency of incident light falli...

If the frequency of incident light falling on a photosensitive metal is doubled, the kinetic energy of the emitted photoelectron is

A

unchanged

B

halved

C

doubled

D

more than twice its initial value

Text Solution

Verified by Experts

The correct Answer is:
D
By Einstein.s photoelectric equation, The kinetic energy of photoelectrons
`KW = hv -phi`
where v = frequency of incidence light
and `KE.-2hv -phi`
So, the kinetic energy is more than twice its initial value.
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