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Question

A gas at 10C temperature and 1.013×105 Pa pressure is compressed adiabatically to half of its volume. If the ratio of specific heats of the gas is 1.4, what is its final temperature?

A
100oC
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B
123oC
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C
93oC
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D
146oC
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Solution

The correct option is

A

100oC



Given:- Temperature, T1=10C
Pressure =1.013×105
Ratio of specific heats =1.4

Solution:-

For Adiabatic process :-

PVγ=constant

TVγ1=constant

T1Vγ11=T2Vγ12

T2=T1Vγ11Vγ12

=(10+273)(V1V2)γ1

=(283)(2)1.41

=283×20.4

=283×1.32

T2=373.56K or

T2=373.56273

T2=100.56C100C

Hence the correct option is A

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