In a thermodynamic process two moles of a monatomic ideal gas obeys P ∝V−2. If temperature of the gas increases from 300 K to 400 K, then find work done by the gas (where R=universal gas constant)
A
200 R
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B
-200 R
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C
-100 R
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D
-400 R
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Solution
The correct option is A -200 R Given,
P∝V−2
n=2
T1=300K
T2=400K
PV2=const. . . . . .(1)
γ=2 (PVγ=constant)
The above equation shows that the process is adiabatic process,
The work done in adiabatic process in thermodynamics is given by