1.

Assertion :- A thin aluminum disc, spinning freely about a central pivot, is quickly brought to rest when placed between the poles of a strong U-shaped magnet. Reason :- A current induced in a disc rotating in a magnetic field produces a torque which tends to oppose the disc's motion.

Answer»

If the Assertion & Reason are TRUE& the Reason is a CORRECT explanation of the Assertion .
If both Assertion & Reason are True & the Reason is not a correct explanation of the Assertion.
If Assertion is True but the Reason is FASLE.
If both Assertion and Reason are FALSE .

ANSWER :a


Discussion

No Comment Found

Related InterviewSolutions