Magnetism Question 116
Question: Two short magnets having magnetic moments in the ratio 27 : 8, when placed on opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12 m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is
[EAMCET (Med.) 2000]
Options:
A) 0.06 m
B) 0.08 m
C) 0.12 m
D) 0.18 m
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{M _{1}}{M _{2}}={{( \frac{d _{1}}{d _{2}} )}^{3}}\Rightarrow \frac{27}{8}={{( \frac{d _{1}}{0.12} )}^{3}} $
$ \Rightarrow \frac{3}{2}=\frac{d _{1}}{0.12}\Rightarrow 0.18\ m $
BETA
