1.

A magnet of magnetic moment M oscillating freely in earth's horizontal magnetic field makes n oscillations per minute. If the magnetic moment is quadrupled and the earth's field is doubled, the number of oscillations made per minute would be                                                                                                             [MP PET 1991]

A.            \[\frac{n}{2\sqrt{2}}\]      
B.            \[\frac{n}{\sqrt{2}}\]
C.            \[2\sqrt{2}n\]                      
D.            \[\sqrt{2}n\]
Answer» D.            \[\sqrt{2}n\]


Discussion

No Comment Found

Related MCQs