Question

cross-section. The ratio of the magnetic field at - and 2a is-
(1)
(2) 4
(3) 1
2)A charged particle of mass m and charge q travels on a circular path of radius r that is perpendicula
to a magnetic field B. The time taken by the particle to complete one revolution is-
2π mg
21qB
21 m
(3) —
m
(1)
(2) 21q?B
(4) GB
B
m
m​

Answer 1

Answer:

Sorry.. But first question is incomplete

2)2 pi m/qB

Explanation:

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