Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Stuck here, help me understand: A magnet is heated so as to reduce its magnetic moment by 19%. Periodic Time of the magnetometer will be

A magnet is heated so as to reduce its magnetic moment by 19%. Periodic Time of the magnetometer will be

  • Option 1)

    \uparrow 19 \%

  • Option 2)

    \uparrow 11 \%

  • Option 3)

    \downarrow 19 \%

  • Option 4)

    \downarrow 10 \%

 

Answers (1)

best_answer

 

\\* T = 2\pi\sqrt{\frac{I}{mB}} \Rightarrow T\;\alpha\;\frac{1}{\sqrt{M}} \\* \frac{T_{1}}{T_{2}} = \sqrt{\frac{M_{2}}{M_{1}}} \Rightarrow \frac{T_{1}}{T_{2}} = \sqrt{\frac{81}{100}} = \frac{9}{10} \\* \Rightarrow T_{2} = \frac{10}{9}T_{1} \Rightarrow 11\%

SHM of Bar Magnet in a Magnetic Field -

T = 2\pi \sqrt{\frac{I}{MB}}

I \rightarrow Moment of Inertia of magnet

M \rightarrow Magnetic moment of magnet

B \rightarrow Magnetic field

- wherein

* In uniform Magnetic field Bar magnets performs SHM.

* Formula

 

 


Option 1)

\uparrow 19 \%

This is incorrect.

Option 2)

\uparrow 11 \%

This is correct.

Option 3)

\downarrow 19 \%

This is incorrect.

Option 4)

\downarrow 10 \%

This is incorrect.

Posted by

Aadil

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2024 Topper: Farmer’s son Gajare Nilkrishna says ‘keep questioning until you understand’
anam-khan

NIT Puducherry Cut-off 2024: Computer Science and Engineering had highest closing rank last year
anam-khan

What after JEE Main results 2024? All you need to know about JEE Adv, CSAB, JoSAA counselling

Latest Question