Q81 / 100 · BITSAT 2023 (Memory Based Paper 1) · Physics
A thermodynamic system is taken through cyclic process. The total work done in the process is :
- A$100 \mathrm{~J}$
- Correct answerB$300 \mathrm{~J}$
- CZero
- D$200 \mathrm{~J}$
Solution
Work done $=$ Area under the curve
$\Rightarrow \mathrm{W}=\frac{1}{2} \times(4-2) \times(400-100)=\frac{1}{2}(2) \times 300$
$\mathrm{W}=300 \mathrm{~J}$
$\Rightarrow \mathrm{W}=\frac{1}{2} \times(4-2) \times(400-100)=\frac{1}{2}(2) \times 300$
$\mathrm{W}=300 \mathrm{~J}$
Hence, the correct answer is option: 'B'.