Embibe Experts Solutions for Chapter: Dual Nature of Radiation and Matter, Exercise 1: Exercise

In a Geiger-Marsden experiment, what is the distance of the closest approach to the nucleus of an alpha particle before it comes momentarily to rest and reverse its direction? Given: Kinetic energy of $\alpha$ -particle $=7.7\mathrm{meV}$ and $\mathrm{Z}=79$ for gold.

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,

Does a photon carry momentum?

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.

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

In a photoelectric effect experiment, the slope of the graph between the stopping potential and the incident frequency will be of the order of

At atom of mass M which is in the state of rest emits a photon of wavelength $\mathrm{\lambda }$. As a result, the atom will deflect with the kinetic energy equal to (h is Planck's constant)