calculate the de-broglie wavelength of the electrons acclerated through a potential difference of 56`V`.

The kinetic energy of an electron accelerated through a potential difference of 100V is

De Broglie wavelenth associated with an electron accelearted through a potential difference v is lambda . What will be its wavelength when the accelerating potential is increased to 4 V?

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

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