Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Moving Charges and Magnetism Motion in a Magnetic Field
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 ∶ 4
2
4 ∶ 1
3
8 ∶ 1
4
More than one of the above
5
None of the above