Question

The work done in driving a liquid through a pipe against a pressure difference of $200$ K $Pa$ between the ends of a pipe at $20$ ${Km}^3$ of water

• A. $2\times {10}^{9}J$
• B. $4\times {10}^{9}J$
• C. $8\times {10}^{9}J$
• D. $16\times {10}^{9}J$

Answer 1

The correct option is B $4\times {10}^{9}J$

$\begin{array}{c}w=pr\\ =200\times {10}^3\times 20\times {10}^{3}J\\ =4\times {10}^{9}J\\ Hence,theoptionBisthecorrectanswer.\end{array}$