The length of metallic wire|Electrostatics|JEE-MAIN

JEE MAIN 2021

26.02.2021_S2

Question

The length of metallic wire is $\ell_1$ when tension in it is $T_1$. It is $\ell_2$ when the tension is $T_2$. The original length of the wire will be-

Select the correct option:

$\frac{\ell_1+\ell_2}{2}$

$\frac{T_2 \ell_1+T_1 \ell_2}{T_1+T_2}$

$\frac{T_2 \ell_1+T_1 \ell_2}{T_2+T_1}$

$\frac{T_1 \ell_1+T_2 \ell_2}{T_2-T_1}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Easy

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