Question

Select the correct answer.

Answer 1

Answer:

Work and time

Explanation:

(1) Power of a machine is given by :

$P=\dfrac{work\ done}{time\ taken}$

The work done of a machine is directly proportional to the work done and inversely proportional to the time taken by it.

So, the power of a machine depend on the work done and time taken. The correct option is (c) "work and time".

(2) This part is same as part 1.

i.e. power = work done/ time

or P = W / t

Hence, the correct option is (c) " work and time ".