A thin rectangular magnet suspended freely has a period of oscillation 4 s. If it is broken into two halves each having half of their initial length. If they are suspended again, then the time period of oscillation of each part will be
A
4 s
B
2 s
C
1 s
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Time period for oscillating magnet is
… (i)
where I is the moment of inertia, M is the magnetic moment
Where, m = pole strength
If the magnet is broken in two equal parts, the new magnetic dipole moment is
New time period, 
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If a rod of length L and magnetic moment M bent into a semicircular arc, then new magnetic moment w…
It is found that work done in turning a magnet by angle from magnetic meridian is n times the work…
A planar coil having 15 turns carries 20 A current. The coil is oriented with respect to the unifor…
A bar magnet has a coercivity of . It is placed inside a solenoid of length 12 cm having 60 turns …
A paramagnetic sample shows a net magnetization of , when placed in an external magnetic field of …
Which of the following is a vector quantity?