1.

At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be                                                           [MP PMT 1989; MP PET/PMT 1988]

A.            4 sec                                        
B.            2 sec
C.            \[\frac{1}{2}\sec \]            
D.            \[\sqrt{2}\sec \]
Answer» E.


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