InterviewSolution
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InterviewSolution
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If , a machine gun fires n bullets per second each with kinetic energy K, then the power of the machine gun isA. `nK^(2)`B. `(K)/(n)`C. `n^(2)K`D. nk |
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Answer» Correct Answer - D (d) The power of the machine gun `=("total work done")/("time")=(n.(1)/(2)mv^(2))/(t)` `=n.(1)/(2)(mv^(2))/(t)" " (therefore K=(1)/(2)mv^(2), t=1s)` `:.` The power of the machine gun=nK |
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