At a certain place a small bar magnet completes 30 oscillations per minute. At another place, where the magnetic field is double, its time period will be

At a certain place a small bar magnet completes 30 oscillations per mi

1.	At a certain place a small bar magnet completes 30 oscillations per minute. At another place, where the magnetic field is double, its time period will be
Answer» 4 s 2 s `1/2 s` `sqrt2`s Solution :At 1st PLACE `B_1 = B, T_1 = (60)/(30) s = 2s ` .At 2nd place `2B_1 = 2B` `because (T_1)/(T_2) = SQRT((B_2)/(B_1)) implies T_2 = T_1 xx sqrt((B_1)/(B_2)) = 2 xx sqrt((1)/(2)) = sqrt2 `s

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At a certain place a small bar magnet completes 30 oscillations per minute. At another place, where the magnetic field is double, its time period will be

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