Question

The correct graph showing the relation between energy (E) of photoelectrons and frequency $v$ of incident light is

• A.
• B.
• C.
• D.

Answer 1

Answer: (C)

If using light of different frequencies a graph is plotted between the maximum kinetic energy $E_k$ of the photoelectron and frequency $v$ of light, then a straight line is obtained, according to relation $E_k=h{v}_0-W$, where $W$ is the intercept cut by straight line on negative $E_k$-axis.