Magnetism Question 114
Question: The bob of a simple pendulum is replaced by a magnet. The oscillations are set along the length of the magnet. A copper coil is added so that one pole of the magnet passes in and out of the coil. The coil is short-circuited. Then which one of the following happens
[KCET 1994]
Options:
A) Period decreases
B) Period does not change
C) Oscillations are damped
D) Amplitude increases
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Answer:
Correct Answer: C
Solution:
It is due to the magnetic field produced by coil.