Question

According to Einsteins photoelectric equation, the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

The maximum kinetic energy of photoelectron ejected is given by
$K.E.$ $=h\upsilon -{\varphi }_0=h\upsilon -h{\upsilon }_0$
where work function depends on the type of material
If the frequency of incident radiation is greater than ${\upsilon }_0$ only then the ejection of photoelectrons start. After that as frequency increases kinetic energy also increases