Figure shows a photo cell being illuminated by monochromatic light. If the intensity is kept constant and the frequency of the incident light is increased , then the

Photoelectric current in the circuit can be reduced to zero when the polarity of the terminal is reversed and The maximum kinetic energy of the photoelectric increases as $K{E}_{max}=h\nu - \varphi .$

If n be the number of photons passing through unit cross sectional area of the incident light beam , then n = $\frac{I}{h\nu }.$When frequency is increased , n decreases .