List of top Physics Questions on Photoelectric Effect asked in SRMJEEE

Monochromatic light of frequency \( 8 \times 10^{14} \, \text{Hz} \) is incident on a metal surface whose threshold frequency is \( 5 \times 10^{14} \, \text{Hz} \). The stopping potential is approximately:
(Given \( h = 6.6 \times 10^{-34} \, \text{J s} \), \( e = 1.6 \times 10^{-19} \, \text{C} \))

Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface.Find out the ratio of maximum velocity of photo electrons emitted in the two cases.

Kinetic energy of photo electron \(E_K\) changes with frequency \((f)\) of light. Which of the following graph represents this emission?

Light of two different frequencies whose photons have energies \(1\ \text{eV}\) and \(2.5\ \text{eV}\) respectively, successively illuminate a metallic surface whose work function is \(0.5\ \text{eV}\). Ratio of maximum speeds of emitted electrons will be