Question

An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then

• A. The path of proton shall be more curved than that of electron
• B. The path of proton shall be less curved than that of electron
• C. Both are equally curved
• D. Path of both will be straight line

Answer 1

Answer: (C)

Both are equally curved

Answer 2

$r = m v / q B$

Since both have same momentum, therefore the circular path of both will have the same radius.