From the figure describing photoelectric effect we may infer correctly that

Options

A. Na and Al both have the same threshold frequency
B. Maximum kinetic energy for both the metals depend linearly on the frequency
C. The stopping potentials are different for Na and Al for the same change in frequency
D. Al is a better photo sensitive material than Na

Answer

B

Explanation

`k_("max") = hf-phi_0`
`k_("max") prop f`