Calculate the de Brogilie wavelength of a proton having kinetic energy 50 eV. `(m_p = 1.67 xx 10^-27 kg. h = 6.62 xx 10^34J-s)`

Calculate de Broglie wavelength of an electron having kinetic energy 120 eV.

Calculate the de-Broglie wavelength of a proton having K.E. 50eV .

Find the de Broglie wavelength of a neutron in thermal equilibrium with matter having average kinetic energy of 3/2 kT at 300^@C . (m = 1.675 xx 10^-27 kg and K = 1.38 xx 10^38 Jk^- 1)

Calculate de Broglie wavelength of an electron (m = 9.1 xx 10^-31kg) moving with a velocity of 10^5 m//s .