Statement A : An engine A can perform a given work in 1 hr and engine B can perform the same work in ½ hr then B has greater power than A. Statement B : Power is the dot product of force and velocity
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a
A & B is correct
b
A & B are wrong
c
A is correct and B is wrong
d
A is wrong & B is correct
answer is A.
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Detailed Solution
Average power = Total work done/Total time, so average power of B is greater than that of A. Also,
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Statement A : An engine A can perform a given work in 1 hr and engine B can perform the same work in ½ hr then B has greater power than A. Statement B : Power is the dot product of force and velocity