Statement-1: If an electron and proton enter a perpendicular magnetic field with equal momentum, then path of electron is more curved than that of proton.
Statement-2: Electron is lighter particle.

Options

A. Statement-1 is true, Statement-2 is true, Statement-2 is a correct explaination of Statement-1.
B. Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation of Statement-1.
C. Statement-1 is true, Statement-2 is false.
D. Statement-1 is false, Statement-2 is true.

Answer

D

Explanation

Momentum, `p=mv` or `v=p//m`. In a magnetic field `qv B=mv^2//r` or `r=mv//qB=p//qB`
i.e. `rprop1//q`
`:. r_1//r_2=q_2//q_1=e//e=1`.