Question
Download Solution PDFThe pressure of a system is reduced by an iso-choric process. If the heat rejected from the system is 220 J, then find the change in internal energy of the system.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
The first law of thermodynamics:
- The first law of thermodynamics states that the change in internal energy of a system is equal to the sum of the heat exchanged with the surroundings and the amount of work done by the surrounding on the system.
⇒ Q = W + ΔU
Where U = internal energy of the system, Q = amount of heat, and W = work done
Isochoric process:
- If the thermodynamic process is carried out at constant volume then it is called an isochoric process.
- The change in internal energy in this process is equal to the heat supplied or rejected.
- The work done in this process is zero.
⇒ q = ΔU
CALCULATION:
Given Q = 220 J
- If the thermodynamic process is carried out at constant volume then it is called an isochoric process.
- The change in internal energy in this process is equal to the heat supplied or rejected.
- The work done in this process is zero.
So the change in internal energy is given as,
⇒ Q = ΔU = 220 J
- Hence, option 1 is correct.
Last updated on Jul 4, 2025
-> The Indian Coast Guard Navik GD Application Correction Window is open now. Candidates can make the changes in the Application Forms through the link provided on the official website of the Indian Navy.
-> A total of 260 vacancies have been released through the Coast Guard Enrolled Personnel Test (CGEPT) for the 01/2026 and 02/2026 batch.
-> Candidates can apply online from 11th to 25th June 2025.
-> Candidates who have completed their 10+2 with Maths and Physics are eligible for this post.
-> Candidates must go through the Indian Coast Guard Navik GD previous year papers.