Find de-Broglie wavelength associated with a proton of energy 2 MeV. Given, mass of proton is `1.67 xx 10^(-27) kg`.

Obtain de-Broglie waveelngth of an electon of kinetic energy 150 eV.Given mass of electron, m=9.1 xx 10^(-31) kg ,charge on electron, e=1.6 xx 10^(-19) C and Planck's constant , h=6.62 xx 10^(-34) J s .

Calculate the De-Brogile wavelength of an electron and proton if their 10^5 m//s given mass of electron is 9.1 xx 10^(-31) kg (kilogram). Mass of proton 1.67 xx 10^(-27) kg . Plank.s constant h=6.625 xx 10^(-34) JS (Joule Second).

Find de-Broglie wavelength associated with an electrons moving with velocity 0.6 C. Given, rest mass of electron = 9.1 xx 10^-31 kg , h=6.63 xx 10^-34 Js .

Calcualte the ratio of the accelerating potential requied to accelrate a deutron and alpha particle to have the same de-Broglie wavelength assoiated with them.Given,mass of deutron = 3.2 xx 10^(-27) kg and mass of alpha particle = 6.4 xx 10^(-27) kg .