Water falls from a height of $60 \mathrm{~m}$ at the rate of $15 \mathrm{~kg} / \mathrm{s}$ to operate a turbine. The losses due to frictional forces are $10 \%$ of energy. How much power is generated by the turbine? $\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)$

• A

  $7.0 \mathrm{~kW}$
• Correct answer
  B

  $8.1 \mathrm{~kW}$
• C

  $10.2 \mathrm{~kW}$
• D

  $12.3 \mathrm{~kW}$

Hence, the correct answer is option: 'B'.