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11. thermodynamics — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics11. thermodynamics1 Mark
MCQ
In the reported figure, heat energy absorbed by a system in going through a cyclic process is $......\,\pi J$
  • A
    $50$
  • B
    $150$
  • ✓
    $100$
  • D
    $200$
✓

Answer

Correct option: C.
$100$
c
For complete cyclic process

$\Delta U=0$

$\therefore \text { from } \Delta Q=\Delta U+W$

$=0+W$

$\Delta Q=W$

$=\text { Area }$

$=\pi r_{1} \cdot r_{2}$

$=\pi \times\left(10 \times 10^{3}\right)\left(10 \times 10^{-3}\right)$

$\Delta Q=100 \pi$

$\therefore \text { Ans. }=100$

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