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0 votes
13.6k views
in Physics by (34.9k points)

A proton and an α-particle, having kinetic energies Kp and Kα, respectively, enter into a magnetic field at right angles.

The ratio of the radii of trajectory of proton to that of α-particle is 2 : 1. The ratio of Kp : Kα is :

(1) 1 : 8

(2) 8 : 1

(3) 1 : 4

(4) 4 : 1

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1 Answer

+1 vote
by (34.4k points)

Correct option is (4) 4 : 1

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