A gas is adiabatically compressed till its pressure becomes 64 times to its initial pressure. What is the final temperature if initial temperature is 270C and γ is 3/2,
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a
600 K
b
900 K
c
1200 K
d
1600K
answer is C.
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Detailed Solution
adiabatic relation of pressure and temperature is P1−γTγ=constant; if initial pressure is P1;final pressure P2=64P1;initial temperature T1=27+273=300K;final temperature=T2=?specific heat ratio=32P1−γTγ=constantTγ=constantP1−γT=constantP1−γ1 γ=constantP1−γγ=constantP γ-1 γ γ-1 γ=32-132=3-2232=13----(1)T2T1=P2P1 γ-1 γ T2300=64P1P1 γ-1 γT2=3004313 from(1)T2=300×4=1200K