A) \[\frac{{{\ell }_{1}}+{{\ell }_{2}}}{2}\]
B) \[\frac{{{\ell }_{1}}{{T}_{2}}+{{\ell }_{2}}{{T}_{1}}}{{{T}_{1}}+{{T}_{2}}}\]
C) (c)\[\frac{{{\ell }_{1}}{{T}_{2}}-{{\ell }_{2}}{{T}_{1}}}{{{T}_{2}}-{{T}_{1}}}\]
D) \[\sqrt{{{T}_{1}}{{T}_{2}}{{\ell }_{1}}{{\ell }_{2}}}\]
Correct Answer: C
Solution :
[c] If \[\ell \] is the original length of wire, then change in length of first wire,You need to login to perform this action.
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