A potential difference of 15 KV is applied to accelerate the electron in an electron microscope. The de broglie wavelength of the electron waves is

If the potential difference used to accelerate electrons is tripled, by what factor does the de Broglie wavelength of the electron beam change ?

If the potential difference used to accelerate electrons is doubled, by what factor does the de-Broglie wavelength associated with the electrons change ?

If the potential difference used to accelerate electrons is tripled, by what factor does de Broglie wavelength of electrons beam change ?

If electron is accelerated under 50 KV in microscope ,find its de-Broglie wavelength.

How much potential is to be applied to accelerate an electron, so that its de-broglie wavelength should 0.4 Å ?

A physicist was performing experiments to study the velociyt and wavelength of the electron. In one case, the electron was accelerated through a potential differences of 1 KV and in second case it was accelerated through a potential difference of 2KV. The velocity acquired by the electron will be