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

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

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