The ratio of wavelengths of proton and deuteron accelerated by potential Vp and Vd is 1 : $\sqrt2$. Then the ratio of Vp to Vd will be :

Question

The ratio of wavelengths of proton and deuteron accelerated by potential V_p and V_d is 1 : $\sqrt2$. Then the ratio of V_p to V_d will be :

1 : 1