A) 80 cm
B) 90 cm
C) 100 cm
D) 110 cm
Correct Answer: C
Solution :
\[{{l}_{2}}=\left( \frac{{{J}_{1}}}{{{J}_{1}}+{{J}_{2}}} \right)\,l=\frac{100\times 10}{(100+10)}=100\,\,cm\]You need to login to perform this action.
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