ElectroMagnetic InductionHard
Question
A metallic rod of length ′l′ is tied to a string of length 2l and made to rotate with angular speed ω on a horizontal table with one end of the string fixed. If there is a vertical magnetic field ′B′ in the region, the e.m.f. induced across the ends of the rod is : 
Options
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B.
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D.
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