Question

The photocurrent in an experiment on photoelectric effect increases if

Answer 1

Increasing the intensity while keeping frequency fixed increases the number of photons hitting the metal and hence it increases the rate at which electrons are emitted. In turn the photocurrent increases.

So, the answer is intensity is increased

Answer 2

increases the intensity while keeping frequency fixed increases the no. of photons hitting the metal and hence it increases the rate at which electrons are emitted.