A) 5 N
B) 20 N
C) 40 N
D) 80 N
Correct Answer: C
Solution :
\[n\propto \sqrt{T}\]Þ \[\frac{{{n}_{1}}}{{{n}_{2}}}=\sqrt{\frac{{{T}_{1}}}{{{T}_{2}}}}\] Þ \[\frac{n}{2n}=\sqrt{\frac{10}{{{T}_{2}}}}\]Þ \[{{T}_{2}}=40N\]
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