When a surface is irradiated with light of wavelength

PHYSICS · Subjective · CBSE · Physics · Dual Nature of Radiation and Matter · Dual Nature of Radiation and Matter

Problem

\lambda=4950\ \text{\AA}

, a photocurrent appears that vanishes if a retarding potential of

0.6\ \text{V}

is applied. When a different source of light is used, the critical retarding potential changes to

1.1\ \text{V}

. Find the work function of the emitting surface and the wavelength of the second source. If the photoelectrons after emission from the surface are subjected to a magnetic field of

10\ \text{T}

, what changes will be observed in the two retarding potentials?

Related theory

Magnetic Forces
Einstein's Photoelectric Equation
Quantum Explanation of PE
The photoelectric effect
Photoelectric effect
Dual Nature of Radiation and Matter

Browse the problem library