Photoelectric effect | Class 12|

Assertion : Photoelectric effect supports the quantum nature of light. Reason : Photoelectric emission is instantaneous.

Light of wavelength lambda falls on metal having work functions hc//lambda_(0) . Photoelectric effect will take place only if :

Light of wavelength lambda falls on metal having work functions hc//lambda_(0) . Photoelectric effect will take place only if :

Assertion Photoelectric effect can take place only with an electron bound in the atom Reason Electron is a fermion Whereas proton is a boson

The maximum kinetic energy of electrons emitted in the photoelectric effect is linearly dependent on the ………. Of the incident radiation .

Photoelectric effect takes place in element A. Its work funcation is 2.5 eV and threshold wavelength is lambda . An other element B is having work function of 5 eV . Then find out the wavelength that can produce photoelectric effect in B.

The figure shows the results of an experiment involving photoelectric effect. The graphs A, B,C and D relate to a light beam having different wavelengths. Select the correct alternative.

Statement-1: In Photoelectric effect , electrons absorbing the photon can not be a free electron. Statement -2: A free electron can't absorb a photon completely

Describe photoelectric effect and state the laws of photoelectric emission.

In a photoelectric effect, electrons are emitted