Question

The photon of frequency vis incident on a metal surface whose threshold frequency is v₀. The kinetic energy of the emitted photoelectrons will be ____________.

Options

• hv

• hv₀

• `"h"  ("v" + "v"_0)`

• `"h"  ("v" - "v"_0)`

Answer 1

The photon of frequency vis incident on a metal surface whose threshold frequency is v₀. The kinetic energy of the emitted photoelectrons will be `"h"  ("v" - "v"_0)`.

Explanation:

`"K.E"_ "max" = "hv" - phi = "hv" - "hv"_0 = "h"  ("v" - "v"_0)`