Question

Consider a proton in a uniform magnetic field.
Which of the following parameter changes
while it moves freely in a uniform magnetic
field?
a) Mass
b) Speed
c) Velocity
d) None of these ​

Answer 1

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.The magnetic force acts perpendicular to the direction of motion of the proton. It does not change its mass and speed but changes its direction of motion. So both velocity and momentum get changed.

Answer 2

Explanation:

c is your correct answer