Question

A charged particle enters a magnetic field at right angles to the magnetic field. The field exists for a length
equal to 1.5 times the radius of circular path of the particle. The particle will be deviated from its path by what angle​

Answer 1

The length of the field is 1.5 times the radius of the circular path of the particle.

It means the radius of the circular path is less than length of magnetic field region.

So,it is easy to say that the particle will return back at an angle 180°.

For a reference you can take the figure attached.

There you can see radius r is less than length of the magnetic field region. So the particle will return back. Angle of deviation is 180°.

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