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With a standard rectangular bar magnet, the time period in the uniform magnetic field is `4 sec`. The bar magnet is cut parallel to its length into `4` equal pieces. The time period in the uniform magnetic field when the piece is used (in sec) (bar magnet breadth is small)A. 16B. 8C. 4D. 2 |
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Answer» Correct Answer - C Time period of magnet, `T-2pisqrt((l)/(MB))` When magnet is cut parallel to its length into four equal pieces. |
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