Test Index

Magnetism

Section: Physics

© examsnet.com

Question : 48 of 48

Marks: +1, -0

A particle of mass m and charge q, moving with velocity V enters Region II normal to the boundary as shown in the figure. Region II has a uniform magnetic field B perpendicular to the plane of the paper. The length of the Region II is l. Choose the correct choice(s).

[JEE Adv 2008 P1]

The particle enters Region III only if its velocity is V > $\frac{qlB}{m}$ .
The particle enters Region III only if its velocity V < $\frac{qlB}{m}\text{. }$
Path length of the particle in Region II is maximum when velocity V = $\frac{qlB}{m}$ .
Time spent in Region II is same for any velocity V as long as the particle returns to Region I.

Go to Question:

Prev Question