Question

An engine draws water from a depth of $10m$ with constant speed $2m/s$ at the rate of $10Kgper10second$ The power of the engine is (in $watt$): (Take: $g=9.8m/s^2$)

• A. $102$
• B. $98$
• C. $100$
• D. $200$

Answer 1

The correct option is B $98$

$p=\frac{mgh}{t}=\frac{10\times 9.8\times 10}{10}=98W$