In a flexible balloon, 2 moles of having an initial volume of at a temperature of

is filled ( is a linear triatomic gas) . The gas is first expanded to thrice its initial volume isobarically and then expanded adiabatically so as to attain its initial temperature. Assuming gas is ideal, and . Work done by the gas in the whole process is:

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

2 K J

3.2 K J

40 K J

15 K J

answer is D.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Concept- The isobaric process maintains steady pressure while transferring heat from one system to another. There is no heat transmission from the system to the surroundings during the adiabatic phase. By adjusting the temperature, the heat is kept constant. The adiabatic process isolates the system from its surroundings.
1. Isobaric process:

Work done

2. Adiabatic process:

for polyatomic gases.

constant

Work done in adiabatic process
Question Image

Total work done

Hence, the answer is 15KJ.

Watch 3-min video & get full concept clarity