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The photoelectric threshold frequency of...

The photoelectric threshold frequency of a metal is v. When light of frequency 4v is incident on the metal . The maximum kinetic energy of the emitted photoelectrons is

A

`4hupsilon`

B

`3hupsilon`

C

`5hupsilon`

D

`(5hupsilon)/2`

Text Solution

Verified by Experts

The correct Answer is:
B
The maximum kinetic energy of the emitted electron is given be
`K_(max)=hupsilon-phi_(0)=h(4upsilon)-h(upsilon)=3hupsilon`
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