Question

What changes when the intensity of light increases while its frequency remains the same?

Options

• The frequency of each photon increases.

• The energy of each photon increases, not the number of photons.

• The number of photons increases, not the energy of each photon.

• The work function of the metal increases.

Answer 1

Increasing intensity increases the number of photons. At the same frequency, each photon still has the same energy \[E=h\nu\].