If a proton and an electron have same de Broglie wavelength , which has more momentum and kinetic energy ?

The de Broglie wavelength associated with a ball of mass 1kg having kinetic energy 0.5J is

Both an electron and a photon have same de-Broglie wavelength of 1 . 2. Å . The ratio of their energies is nearly

If E_1, E_2 and E_3 represent respectively the kinetic energies of an electron, an alpha particle and a proton respectively each having same deBroblie wavelength then which is incorrect relation?

A car and truck have same momentum. Which will have more kinetic energy ?

The ratio of the de-Broglie wavelengths of two particles having mass ratio 1 : 3 and kinetic energy ratio 2 : 1 is