What is the de broglie wavelength of

(a) 1 ev electron

(b) 10 mev proton

(c) 100 mev electron? (you might need to use the relativistic energy formula for ©

(a). The wave length of 1 eV electron is .

(b). The wave length of 10 MeV proton is .

(c). The wave length of 100 MeV electron is .

Explanation:

Given that,

(a). We need to calculate the wavelength of 1 eV electron

Using formula of De Broglie wavelength

The wave length of 1 eV electron is .

(b). We need to calculate the wavelength of 10 MeV proton

Using formula of De Broglie wavelength

Put the value into the formula

The wave length of 10 MeV proton is .

(c). We need to calculate the wavelength of 100 MeV electron

Using formula of De Broglie wavelength

Put the value into the formula

The wave length of 100 MeV electron is .

Hence, This is the required solution.