1.

Asseration A bar magnetic is dropped into a long vertical copper tube. Even taking air resistance as negligible, the magnet attains a constant terminal velocity gets increased. Reason: The terminal velocity depends on eddy current produced in bar magnet.

Answer»

If both asseration and reason are true and reason ISTHE correct explanation of ASSERTION.
If both asseration and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If assertion is false but reason is true.

Solution :When the TUBE is hearted its RESISTANCE gets increased due to which eddy currents produced in copper tube becomes weak. Hence opposing force also gets increased.


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