Seema Saini Solutions for Chapter: Atomic Structure, Exercise 1: DPP 3.1

The ejection of the photoelectron from the silver metal in the photoelectric effect experiment can be stopped by applying a voltage of $0.35 \mathrm{V}$ when the radiation $256.7 \mathrm{nm}$ is used. Calculate the work function for silver metal.

The approximate radius of a $\mathrm{H}$ atom is $0.05 \mathrm{nm}$, and that of the proton is $1.5\times {10}^{-15} \mathrm{m}$. Assuming both the hydrogen atom and the proton to be spherical, calculate the fraction of the space in an atom of hydrogen that is occupied by the nucleus.

One quantum is absorbed per gaseous molecule of ${\mathrm{Br}}_2$ for converting into $\mathrm{Br}$ atoms. If light absorbed has a wavelength $5000 \stackrel{\circ }{\mathrm{A}},$ calculate the energy required to break bonds in $\mathrm{kJ} {\mathrm{mol}}^{-1}.$

In Rutherford's gold foil experiment, the scattering of $\mathrm{\alpha }$-particles takes place. In this process:

When a high-speed electron strikes a metal surface, which of the following can happen?

Which of the following properties does a cathode ray possess?

Which of the following properties is/are proportional to the energy of the electromagnetic radiation?

Energy equivalent of $10.00 {\mathrm{cm}}^{-1}$ is approximately.