Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
a. Mass
b. Speed
c. Velocity
d. Momentum
Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
a. Mass
b. Speed
c. Velocity
d. Momentum

(c) and (d)

When a proton enters a magnetic field region, it is subjected to magnetic force. As a result, the proton’s journey becomes circular. The velocity and momentum change as a result.