Exercise

Are matter waves electromagnetic? Why?

A proton and an electron have same kinetic energy. Which one has greater de Broglie wavelength. Justify.

Find out the ratio of de-Broglie wavelengths of a proton and $\alpha$-particle having equal energies.

A particle of mass $3\times {10}^{-6} g$ has the same wavelength as an electron moving with a velocity $6\times {10}^6 {\mathrm{ms}}^{-1}$. The velocity of the particle is:

Matter waves

State the objective of Davisson and Germer experiment.

Write down the hypothesis of de-Broglie about the dual nature of matter waves.

Briefly explain the principle and working of electron microscope.