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11.Thermodynamics
medium
At $N.T.P.$ one mole of diatomic gas is compressed adiabatically to half of its volume $\gamma = 1.41$. The work done on gas will be ....... $J$
A
$1280 $
B
$1610 $
C
$1815 $
D
$2025 $
Solution
(c)${T_2} = {T_1}{\left( {\frac{{{V_1}}}{{{V_2}}}} \right)^{\gamma – 1}} = 273{(2)^{0.41}}$$ = 273 \times 1.328 = 363K$
$W = \frac{{R({T_1} – {T_2})}}{{\gamma – 1}} = \frac{{8.31(273 – 363)}}{{1.41 – 1}}$$ = – \,1824$
==> $|W| \approx 1815 J$
Standard 11
Physics
Similar Questions
Match List $I$ with List $II$ :
List $I$ | List $II$ |
$A$ Isothermal Process | $I$ Work done by the gas decreases internal energy |
$B$ Adiabatic Process | $II$ No change in internal energy |
$C$ Isochoric Process | $III$ The heat absorbed goes partly to increase internal energy and partly to do work |
$D$ Isobaric Process | $IV$ No work is done on or by the gas |
Choose the correct answer from the options given below :