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5.Magnetism and Matter
easy
Two identical thin bar magnets each of length $l $ and pole strength $m$ are placed at right angle to each other with north pole of one touching south pole of the other. Magnetic moment of the system is
A
$ml$
B
$2\,ml$
C
$\sqrt 2 \,ml$
D
$\frac{1}{2}\,ml$
Solution
(c)${M_{net}} = \sqrt 2 M = \sqrt 2\, ml.$
Standard 12
Physics
