Question

When a metal surface is exposed to solar radiations
(a) The emitted electrons have energy less than a maximum
value of energy depending upon frequency of incident
radiations
(b) The emitted electrons have energy less than maximum
value of energy depending upon intensity of incident
radiation
(c) The emitted electrons have zero energy
(d) The emitted electrons have energy equal to energy of
photons of incident light

Answer 1

Answer:

opt. ( a )

Explanation:

( a ) The emitted electrons have energy less than a maximum

value of energy depending upon frequency of incident

radiations.

Answer 2

The emitted electrons have energy less than a maximum  value of energy depending upon frequency of incident  radiations

Explanation:

According to photo electric effect and Einstein's equation

$h\nu=h\nu_{0}+KE$

From this equation,

Kinetic Energy, $KE=h\nu-h\nu_{0}$

$h\nu_{0}$ is constant, the maximum KE is always less then a maximum value of energy ($h\nu$) depending upon the frequency of the incident radiation.

Hence, the correct answer is option (a)