Q.

An elastic sphere of 0.5 m diameter contains a gas at 115 k Pa. Heating of the sphere causes it to increase to 0.62 m and during the process the pressure is proportional to the sphere diameter. The work done by the gas will be

A. 7.7 kJ
B. Pulsejet
C. 9.9 kJ
D. 15 kJ
E. 11 kJ
Answer» A. 7.7 kJ
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