Two protons are having same kinetic energy. One proton enters a uniform magnetic field at right angles to it. Second proton enters a uniform electric field in the direction of field. After some time their de-Broglie wavelengths are λ1 and λ2 , then
a. λ1=λ2
b. λ1<λ2
c. λ1>λ2
d. some more information is required