Question

A charged particle of mass m and charge q

enters a magnetic field B with a velocity v at

an angle T with B. Choose the incorrect

statement.

(1) The kinetic energy of the particle will not

change if Tz 0°.

(2) The momentum of the particle will not

change if T z 0°.

(3) The particle moves in a circle of radius mv/

qB if T = 90°.

(4) The frequency of circular motion of particle

is independent of the speed of the particle if

T = 90°​

Answer 1

Answer:I think 3 will be incorrect.

Explanation: Reason for 1:

The kinetic energy of a particle remains constant and also the speed remains constant as no work is done by magnetic field.

Reason for 2:

As momentum(p) =mv

So, if velocity is constant (mass is given constant) then p is automatically not changing.

Reason for 4:

Frequency depends on the speed of the particle.

So, ultimately the answer is 3!

Hope u like it.

I'm a new person on brainly.

Try to mark me the brainliest

Answer 2

Answer:

The momentum of the particle will not

change if 0°. is the correct answer

Mark as Brainliest

Explanation: