LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Physics by (54.3k points)
closed by
In an isobaric expansion of a gas:
1. Volume and temperature both increases
2. Volume increases and temperature decreases
3. Volume decreases and temperature increases
4. Volume and temperature both decreases

1 Answer

0 votes
by (30.0k points)
selected by
Best answer
Correct Answer - Option 1 : Volume and temperature both increases


Isobaric process:

  • When a thermodynamic process undergoes a physical change in such a way that its pressure remains constant, then the change is known as the isobaric process.

⇒ P = constant


  • In an isobaric process,

⇒ P = constant     -----(1)

  • The ideal gas equation is given as,

⇒ PV = nRT       -----(2)

Where P = pressure, V = volume, T = temperature, n = number of moles, and R = gas constant

By equation 1 and equation 2 for an isobaric process,

⇒ V ∝ T      -----(3)

  • By equation 3 we can say for an isobaric process the volume of the gas is directly proportional to the temperature.
  • In an expansion process the volume of the gas increases, so the temperature also increases. Hence, option 1 is correct.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.