Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Two strings  have lengths <img alt="\mathrm{ l_A \: and\: l_B

Two strings \mathrm{ A\: and\: B} have lengths \mathrm{ l_A \: and\: l_B} and carry masses \mathrm{ M_A \: and\: M_B} at their lower ends, the upper ends being supported by rigid supports. If \mathrm{ n_A \: and\: n_B} are their fundamental frequencies of their vibrations, then \mathrm{ n_A \: :\: n_B} is -
 

Option: 1

\mathrm{\frac{m_A l_A}{m_B l_B}}


 


Option: 2

\mathrm{\frac{l_A}{l_B} \sqrt{\frac{m_A}{m_B}}}


Option: 3

\mathrm{\frac{M_A}{M_B} \sqrt{\frac{l_A}{l_B}}}


Option: 4

None


Answers (1)

best_answer

Use,\mathrm{n\alpha \frac{\sqrt T}{l}\: or\: n\alpha \frac{\sqrt m}{l}}

\mathrm{\therefore \frac{n_A}{n_B}=\sqrt\frac{M_A}{M_B}\quad\frac{l_B}{l_A}}

Hence option 4 is correct.

Posted by

vishal kumar

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 2026: JCECEB invites fresh applications for Jharkhand state merit list correction

Latest Question