A hoop and a disc of same mass and radius are made of a permanent magnetic material with their magnetic moments parallel to their respective axes. But the magnetic moment of hoop is twice of solid cylinder. They are placed in a uniform magnetic field in such a manner that their magnetic moments make a small angle with the field. If the oscillation periods of hoop and cylinder are T_h and T_c respectively, then

see full answer

High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET

🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.

An Intiative by Sri Chaitanya

$T_{h} = 1 .5 T_{c}$

$T_{h} = 0 .5 T_{c}$

$T_{h} = T_{c}$

$T_{h} = 2 T_{c}$

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

$T = 2 π \sqrt{\frac{I}{mB}} ∴ \frac{T_{h}}{T_{c}} = \sqrt{\frac{I_{h} m_{c}}{I_{c} m_{n}}} = \sqrt{\frac{\frac{1}{2} {MR}^{2} m_{c}}{\frac{1}{4} {MR}^{2} 2 m_{c}}} = 1 \Rightarrow T_{h} = T_{c}$

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE