Through what potential difference should an electron be accelerated so that its de-Broglie wavelength becomes 0.4Å?

Through what potential difference should an electron be accelerated so that its de-Broglie wavelength becomes 0.4 overset(@)(A) ?

Through what potential difference should an electron be accelerated so that its de - Broglie wavelenght becomes 0.5 Å

An electron is accelerated through a potential difference of V volt. It has a wavelength lambda associated with it. Through what potential difference an electron must be accelerated so that its de Broglie wavelength is the same as that of a proton? Take massof proton to be 1837 times larger than the mass of electron

Electron should be accelerated which voltage so that its de-Broglie wavelength will become 0.4 Å.

Calculate the potential difference through which an electron, initially at rest, must be accelerated so that its de Broglie wavelength is equal to 0.40 nm.

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

The potential difference V required for accelerating an electron to have the de-Broglie wavelength of 1 Å is