Embibe Experts Solutions for Exercise 1: Exercise

Blue light can eject electrons from a photosensitive surface, while orange cannot. Will violet and red light eject electrons from the same surface? 

Describe how the feature of the photoelectric effect that cannot be explained by the wave theory of light is explained by the photon theory of light.

Calculate the maximum kinetic energy and maximum velocity of the photoelectrons emitted when the stopping potential is $81 \mathrm{V}$ for the photoelectric emission experiment.

Using Einstein's photoelectric equation show how the cutoff voltage and threshold frequency for a given photosensitive material can be determined with the help of a suitable plot.

Plot a graph showing the variation of stopping potential with the frequency of incident radiation for the different photosensitive materials having work functions ${\mathrm{W}}_1$ and ${\mathrm{W}}_2$ $\left({\mathrm{W}}_1>{\mathrm{W}}_2\right).$ On what factors does the slope and the intercept of the line depend?

Draw a graph showing variation of photocurrent with the anode potential of a photocell.

The threshold wavelength of tungsten is $2400\stackrel{\circ }{\mathrm{A}}$. When tungsten is illuminated with light of wavelength $1600\stackrel{\circ }{\mathrm{A}}$,Find maximum kinetic energy of the emitted electron,

For the photoelectric effect in a metal, Figure shows the plot of cut-off voltage versus frequency of incident radiation. Determine the threshold frequency,