1.

At 27^@Ctwo moles of an ideal mono-atomic gas occupy a volume V. The gas expands adiabatically to a volume 2V. The final temperature of the gas is[ Take Y = 5/3]

Answer»

179 K
189 K
213 K
219 K

Solution :In an ADIABATIC change `T_2V_2^(gamma-1) = T_1V_1^(gamma-1)`
or `T_2=T_1(V_1/V_2)^(gamma-1)`
`T_2=300(V/(2V))^(5/3-1)=300(0.5)^(3//2)`
`T_2=189.03K.`


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