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Standard X
Physics
Faraday's Law
If a bar magn...
Question
If a bar magnet is dropped vertically into a, long copper tube then its final acceleration will be
A
a=g
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B
a>g
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C
a<g
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D
a=0
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Solution
The correct option is
C
a<g
By lenz law, A magnetic field will be induced in the tube which opposes the motion of magnet.
Hence
a
<
g
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