Dry air (γ=32) at atmospheric pressure is suddenly compressed to 14th of its original volume, the pressure will be
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a
10 atm
b
8 atm
c
3 atm
d
6 atm
answer is B.
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Detailed Solution
Pressure P1=P=1 atm to find P2 given volume V1=V and :V2=V4 adiabatic process(it is a sudden process) relation between P and V isPVγ=Constant P1P2=V2V1γ substitute the given values in above equation PP2=V4V32 ⇒PP2=18P2=8P given P= 1 atm ⇒P2=8 atm