Embibe Experts Solutions for Chapter: Dual Nature of Radiation and Matter, Exercise 1: Nagaland Board-2019

Draw and explain the graph showing the variation of stopping potential with frequency of incident radiation in relation to photoelectric effect.

The stopping potential doubles when the frequency of the incident light changes from $\mathrm{\nu } \mathrm{to} \frac{3}{2}\mathrm{\nu }$. The work function of the metal must be

What is photo electric effect? State the laws of photo-electric emission.

Show that de-Broglie wavelength of electron when accelerated through a potential difference $\mathrm{V}$is given by the relation -

$\mathrm{\lambda }=\frac{12.27}{\sqrt{\mathrm{V}}}\stackrel{\mathrm{o}}{\mathrm{A}}$, where $\mathrm{V}$ is in volt.

Explain the effect of potential on photoelectric current with the help of its figure.

Derive the relation $\mathrm{\lambda }=\frac{\mathrm{h}}{\mathrm{p}}$where the symbols have their usual meanings.

Derive the equation ${\mathrm{V}}_{\mathrm{o}}=\left(\frac{\mathrm{h}}{\mathrm{e}}\right)\mathrm{v}-\frac{{\mathrm{\varphi }}_{\mathrm{o}}}{\mathrm{e}}$ from Einstein’s photoelectric equation.

If the intensity of incident radiation on a metal is doubled, what happens to the kinetic energy of emitted photoelectrons?