Embibe Experts Solutions for Exercise 3: Assigment

Choose the correct graph of intensity of incident light and photocurrent.

If alpha particle and deutron are moving with same velocity, the ratio of their respective de-Broglie wavelength will be

Photoelectric effect can be explained by

The linear momentum of a $6\mathrm{MeV}$ photon is

If the threshold wavelength for a metal is $6200\mathrm{\AA }$ then minimum energy required to eject an electron from the surface of metal is (nearly)

Work function of a material depends on

If work function of target material is $2.34\mathrm{eV}$ and wavelength of incident light is $4.36\times {10}^{-7} \mathrm{m}$ then minimum potential required to stop the photo current is about $\left(h=6.6\times {10}^{-34}\mathrm{Js}\right)$

Monochromatic light of wavelength $440 \mathrm{nm}$ is produced. The power emitted by light is $18 \mathrm{mW}.$ The number of photons emitted per second by light beam is $\left(h=6.6\times {10}^{-34}\mathrm{Js}\right)$