What is the de - Broglie wavelength of the alpha - particle accelerated through a potential difference `V`?

What is the de-Broglie wavelength of the alpha -particle accelerated through a potential difference of V volt ? (mass of alpha -particle = 6.6455 xx 10^(-27) kg)

Find the de Broglie wavelength of an alpha particle accelerated through a potential difference of 100 V.

What is the de-Broglie wavelength of an electron beam accelerated through a potential difference of 25 V?

What is the de Broglie wavelength of an electron accelerated from rest through a potential difference of V volts?

What is de-Broglie wavelength of the electron accelerated through a potential difference of 100V?