A neutron, a proton, an electron and an $\alpha -$ particle enter a region of uniform magnetic field with the same velocities. The magnetic field is perpendicular and directed into the plane of the paper. The tracks of the particles are labeled in the figure. The electron follows the track [image:4_image70.emf]

Question

Dr. Abubacker · Accepted Answer

(a) $r = \frac{mv}{Bq}$
$r$ is least when $\left( \frac{m}{q} \right)$ is least.
$\left( \frac{m}{q} \right)$ is least for electron ie. plane is $D$

Q. A neutron, a proton, an electron and an $\alpha -$ particle enter a region of uniform magnetic field with the same velocities. The magnetic field is perpendicular and directed into the plane of the paper. The tracks of the particles are labeled in the figure. The electron follows the track

Explanation

Reviewed by Dr. Abubacker

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