A) \[{{\operatorname{nK}}^{2}}\]
B) \[\frac{K}{n}\]
C) \[{{\operatorname{n}}^{2}}K\]
D) \[\operatorname{nK}\]
Correct Answer: D
Solution :
[d] \[\operatorname{Power}=\frac{total\,work done}{time}\] \[=\frac{\frac{1}{2}M{{v}^{2}}}{t}=\frac{1}{2}\left( m{{v}^{2}} \right)n\because \frac{M}{t}=mn\] \[=kn\because \left[ K.E.K=\frac{1}{2}m{{v}^{2}} \right]\]
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