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In photo electric effect
$A.$ The photocurrent is proportional to the intensity of the incident radiation.
$B.$ Maximum Kinetic energy with which photoelectrons are emitted depends on the intensity of incident light.
$C.$ Max. $K.E$ with which photoelectrons are emitted depends on the frequency of incident light.
$D.$ The emission of photoelectrons require a minimum threshold intensity of incident radiation.
$E.$ Max. K.E of the photoelectrons is independent of the frequency of the incident light.
Choose the correct answer from the options given below:
$A$ and $C$ only
$A$ and $E$ only
$B$ and $C$ only
$A$ and $B$ only
Solution
Intensity of light $\propto$ number of photons $\propto$ no of photo electrons $\propto$ photo current
So, $A$ is correct
$KE _{\max }= h v-\phi$
$KE _{\max }$ depends on frequency
So, $C$ is correct
So, $A$ and $C$ are correct
