Answer:
The magnetic field of the particle is 1.5 T.
(C) is correct option.
Step-by-step explanation:
Given that,
Momentum of particle

Radius = 1.0 km
Charge of the particle

We need to calculate the magnetic field
Using relation of radius of path in magnetic field
Here mv = p

Put the value into the formula


Hence, The magnetic field of the particle is 1.5 T.