Question

In photoelectric effect, the wavelength of the light incident on the metal is changed
from 300nm to 400nm. Find the:
(i) Difference in the Kinetic Energy of the ejected electrons.
(ii) The velocity of electrons in the 2nd case, if the velocity of electrons is 105m/sec
in 1st case. [Use, h×c = 1240nm.]

Answer 1

Explana(ii) The velocity of electrons in the 2nd case, if the velocity of electrons is 105m/section: