Magnetism Question 109
Question: A short magnetic needle is pivoted in a uniform magnetic field of strength 1 T. When another magnetic field of strength $ \sqrt{3} T $ is applied to the needle in a perpendicular direction, the needle deflects through an angle $\theta$, where $\theta$ is
[KCET 1999]
Options:
A) $30^\circ$
B) $45^\circ$
C) $90^\circ$
D) $60^\circ$
Show Answer
Answer:
Correct Answer: D
Solution:
In balance condition $ B _{2}=B _{1}\tan \theta $
$ \Rightarrow \tan \theta =\frac{\sqrt{3}}{1} $
$ \Rightarrow \theta =60^{o} $
BETA
