Statement A : An engine A can perform a given work in 1 hr and engine B can prform the same work in $\frac{1}{2}$ hr. then B has greater power
than A.
Statement B : Power is the dot product of force and velocity

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A is correct and B is wrong

A & B is correct

A & B are wrong

A is wrong & B is correct

answer is A.

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Detailed Solution

We know that,

$p = \frac{∆ W}{t}$

As both engines produce the same amount of work, time is inversely related to power. So the power increases as time decreases.

Hence the correct answer is A&B is correct.

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