Question

In another experiment, the intensity of the incident light and the temperature of the metal are held constant. Assuming that the initial light incident on the metal surface causes electrons to be ejected from the metal, what happens if the frequency of the incident light is increased?

Answer 1

Answer:

Explanation:

if the frequency of the incident light is increased , energy of photon is also increased. So kinetic energy of electrons ejected will be increased . As intensity of light is held constant , no of photons falling will remain constant . Hence no of electrons ejected will remain constant. Only energy of each photon is increased hence energy of electrons being ejected will also increase. Energy of each photon is proportional to frequency of radiation.

Answer 2

Answer:

Explanation:

Answer:

Explanation:

The intensity and the temperature of metal is constant so the number of photo electrons remains constant. As the number of photo electrons remains same so the photo electric remains constant.

As the frequency is increased, the kinetic energy of the photo electrons increases and thus, the speed of photo electrons increases.