In a photoelectric experiment, the wavelength of the incident light is decreased from `6000A` to `4000A`. While the intensity of radiations remains the same,

Options

A. the cut-off potential will increase
B. the cut-off potential will decrease
C. the photoelectric current will increase
D. the kinetic energy of the emitted photoelectrons will increase

Answer

A, D

Explanation

As `K_(max)=eV_(0)=(hc)/lambda-phi_(0)`,when `lambda`decreases, `V_(0)` and `K_(max)` increase.