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As shown in figure a bar magnet suspende...

As shown in figure a bar magnet suspended by a conducting spring is made to oscillate up and down. Then ........

A

deflection of galvanometer is zero.

B

the deflection of galvanometer is on one side.

C

the deflection of galvanometer is on both sides with increasing values with time.

D

the deflection of galvanometer is on both sides with decreasing values with time.

Text Solution

Verified by Experts

The correct Answer is:
D
According to Lenz.s law the motion of the magnet is opposed by the induced current and hence its magnetic field.
As time passes the velocity of magnet decrease and hence induced emf in the spring goes or decreasing.
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