Physics-
General
Easy
Question
A charge particle of charge q, mass m is moving with initial velocity 'v' as shown in figure in a uniform magnetic field 
Select the correct alternative/alternatives
- Velocity of particle when it comes out from magnetic field is
- Time for which the particle was in magnetic field is
- Distance travelled in magnetic field is
- The particle will never come out of magnetic field
The correct answer is: Distance travelled in magnetic field is
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A particle of charge 'q' and mass 'm' enters normally (at point P) in a region of magnetic field with speed v. It comes out normally from Q after time T as shown in figure. The magnetic field B is present only in the region of radius R and is uniform. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which of the following expression(S) is are correct–
A particle of charge 'q' and mass 'm' enters normally (at point P) in a region of magnetic field with speed v. It comes out normally from Q after time T as shown in figure. The magnetic field B is present only in the region of radius R and is uniform. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which of the following expression(S) is are correct–
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If a charged particle of charge to mass ratio 
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A and B are two concentric circular conductors of centre O and carrying current i1 and i2 as shown in the diagram. If ratio of their radii is 1:2 and ratio of the flux densities at O due to A and B is 1:3 then the value of 
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