Question

Which of the following statements is correct for photoelectric effect?

(A) In order to eject electrons from a metal surface, the wavelength of photon must be shorter than the threshold wavelength. (B) In order to eject electrons from a metal surface, the frequency of photon must be lower than the cut-off frequency. (C) The work function increases with increasing the frequency of photons. (D) The work function increases with increasing the wavelength of photons. (E) The kinetic energy of ejected electrons increases with increasing the intensity of photons. (F) The kinetic energy of ejected electrons increases with increasing the wavelength of photons. (G) The stopping potential increases with increasing the intensity of light. (H) The stopping potential increases with increasing wavelength.

Answer 1

Ar! - TAL- correct. I yes the lexe than electrons wavelength of maident photon must be the threshold wavelength to eject from metal surface. Bir Incorrect! (c)- . (D) Incorrect. Incorrect » The berequency of photon must be higher than the cutoff frequency 7 The work function is a independent s property of metal swface. it doesn't depends on the frequency and wavelength of incident light, Rif. doos of electross doesn't depends on the intesity of light. 7 Refrob ejected electross increase with decrease in the wavelength of Incident pho.tore El Incorrect ! Ell- Incorrect (G) - Incorrect / Stopping potentiel doesn't depends on the intensity of Incident Photon El Incorrect. It depends on the frequency of incident photans limearly, on in areasing wavelength stopping potential decrease.