Question

The number of ejected photoelectrons increases with increase in ______ of light.

• A. intensity
• B. wavelength
• C. frequency
• D. None of these

Answer 1

The correct option is A intensity

The number of ejected photoelectrons increases with increase in intensity of light.

As we increase the intensity, the number of photons falling on the metal surfaces increases, therefore more number of electrons can get the required energy for emission, so, more number of electrons get emitted.

Hence, option $\left(A\right)$ is the correct answer.