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Q.

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