A proton, a neutron, an electron and `alpha`-particle have the same energy. Then their de-Broglie wavelengths compare is

What is the de Broglie wavelength

Calcualte the ratio of the accelerating potential requied to accelrate a deutron and alpha particle to have the same de-Broglie wavelength assoiated with them.Given,mass of deutron = 3.2 xx 10^(-27) kg and mass of alpha particle = 6.4 xx 10^(-27) kg .

Calculate the ratio of the accelarating potential required to accelrate a proton and and alpha particle to have the same de-Broglie wavelength associated with them

A proton and an alpha-particle are accelerated using the same potential difference. How are the de-Broglie wavelengths lambda_p and lambda_alpha related to each other?

An electron and alpha particle have the same de-Broglie wavelength associated with them. How are their kinetic energies related to each other?

If photon and an electron have same de-Brogile wavelength then.