A) 25 N
B) 20 N
C) 14 N
D) 28 N
Correct Answer: D
Solution :
Force required to separate the plates is \[F=\frac{2TA}{d}\] ?(i) Here: area \[={{10}^{-2}}\,{{m}^{2}}\] Thickness \[d=0.05\,mm\,\,=\,0.05\times {{10}^{-3}}m\] From equation (i), \[F=\frac{2\times 70\times {{10}^{-3}}\times {{10}^{-2}}}{0.05\times {{10}^{-3}}}=28\,N\]You need to login to perform this action.
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