Question

In photoelectric effect, the kinetic energy of photoelectrons increases linearly with the

• A. Wavelength of incident light
• B. Frequency of incident light
• C. Velocity of incident light
• D. Atomic mass of an element.

Answer 1

The correct option is B Frequency of incident light

The kinetic energy of photoelectrons increases linearly with the frequency of the incident light used.
As per equation of photoelectric effect kinetic energy is given as:
$K.E.=h\nu -h{\nu }_o$
Where, $\nu$ is frequency.
Hence,
$K.E.\propto \nu$