Question

If the frequency of light incident on metal surface is doubled, then the kinetic energy of emitted electrons will become

• A. Doubled
• B. Less than double
• C. More than double
• D. Nothing can be said

Answer 1

The correct option is C More than double

KE = energy of incoming photon- work function.

Now work function is constant for every individual, so if we double the energy of electron whole of the increased energy while be a addition to KE of electron.

So, the answer is option (C).