The pressure (1 X 10⁵Nm⁻²) of the air filled in a vessel is decreased adiabatically so much as to increase its volume three times. The air pressure is (y for air = 1.4, log10 3 = 0.4771, log10 2.148= 0.33206)
Moderate
A. 2.14 X 104 Nm⁻²
B. 2.19 x 105 Nm⁻²
C. 1.14 X 105 Nm⁻²
D. 3.14 x 104 Nm⁻²
