Statement - $1$ : When ultraviolet light is incident on a photocell, its stopping potential is ${V_0}$ and the maximum kinetic energy of the photoelectrons is ${K_{\max }}$. When the ultraviolet light is replaced by $X$-rays, both ${V_0}$ and ${K_{\max }}$ increase. Statement - $2$ : Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

Question

Statement - $1$ : When ultraviolet light is incident on a photocell, its stopping potential is ${V_0}$ and the maximum kinetic energy of the photoelectrons is ${K_{\max }}$. When the ultraviolet light is replaced by $X$-rays, both ${V_0}$ and ${K_{\max }}$ increase.

Statement - $2$ : Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

Statement - $1$ is true, Statement - $2$ is true; Statement - $2$ is the correct explanation of Statement - $1$

Statement - $1$ is true, Statement - $2$ is true; Statement - $2$ is not the correct explanation of Statement - $1$

Statement - $1$ is is false, Statement - $2$ is true

Statement - $1$ is is true, Statement - $2$ is false

Solution

Please login to view the detailed solution steps...

Go to DASH