In an experiment, photons of energy 7.5 eV are incident on a metal surface. Electrons…
Physics · Class 12 · CBSE — Dual Nature of Radiation & Matter
In an experiment, photons of energy 7.5 eV are incident on a metal surface. Electrons emitted from the metal surface are stopped by an electrode at a potential of -4.5 V w.r.t. the metal. The work function of the metal is:
- 3.0 eV
- 4.5 eV
- 7.5 eV
- 12.0 eV
Answer
(A) 3.0 eV
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- The wavelength of matter wave associated with an electron of kinetic energy K is . If the kinetic energy of…
- Photons of frequency v are incident on the surfaces of two metals A and B of threshold frequencies 3 4 v and…
- A particle A with a mass m A is moving with a velocity v and hits a particle B of mass m B at rest. If motion…
- In a photoelectric experiment with a material of work function 2.1 eV, the stopping potential is found to be…
- If the kinetic energy of a particle is increased by 16 times, the percentage change in the de Broglie…
- Let _ e , _ p and _ d be the wavelengths associated with an electron, a proton and a deuteron, all moving…
- The photoelectrons emitted from a given cathode on the incidence of a given monochromatic beam of light have…
- Assertion (A): For monochromatic incident radiation, the emitted photoelectrons from a given metal have speed…
More Dual Nature of Radiation & Matter questions · Browse all practice questions