Compute the typical de-Broglie wavelength of an electron in a metal at `27^@C` and compare it with the mean separation between two electrons in a metal which is given to be about `2xx10^-10m`.

Find the typical de-Broglie wavelength associated with a He atom in helium gas at room temperatuare (27^@C) and 1 atm pressure and compare it with the mean separation between two atoms under these conditions.

Calculate the de-Broglie wavelength for electron moving with speed of 6 xx 10^5 m s^(-1) .

Calculate the de-Brogile wavelength for electron moving with speed of 6 xx10^5 ms^(-1) ?

the de-Brolie wavelength of an electron is 2 overset @A .Calculate its momneum .Planck's constant is 6.6 xx 10^(-27) erg s .

The mean free path of electrons in a metal is 4xx10^-8m . eY energy to an electron in the metal will be

Calculate the magnitude of the electrostatic force exerted by the proton on the electron in the hydrogen atom and compare it with the weight of the electron. Given that mass of electron is 9.1 xx 10^-31 kg, charge on electron is 1.6 xx 10^-19 C and radius of hydrogen atom is 0.53 overset(@)A .

Calculate de Broglie’s wavelength associated with an electron moving with a velocity equal to l/10th that of light.