Questions
If a piece of metal was thought to be magnet, which one of the following observations would offer conclusive evidence?
a
It attracts a known magnet.
b
It repels a known magnet.
c
Neither (a) nor (b).
d
It attracts a steel screw driver.
detailed solution
Correct option is B
Repulsion is the sure test of magnetism.Talk to our academic expert!
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The magnetic induction in air at a distance d from an isolated point pole of strength m in C.G.S system will be
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