A charged particle P leaves the origin with speed v = v0, at some inclination with the x-axis. There is a uniform magnetic field B along the x-axis. P strikes a fixed target T on the x-axis for a minimum value of B = B0. P will also strike T if
(a) B = 2B0, v = 2v0
(b) B = 2B0, v = v0
(c) B = B0, v = 2v0
(d) B = B0/2, v = 2v0
Correct Answer is: (a) B = 2B0, v = 2v0,(b) B = 2B0, v = v0
Pitch = (2π m/QB) vcos θ.
Here, m, Q and θ are constant.
∴ pitch = k (v/B), where k = constant
Initially, d = k (v0 B0) .
