Physics · Work, Power & Energy

NEET (UG) 2024 — Question 18

A thermodynamic system is taken through the cycle abcda. The work done by the gas along the path b c is:

Option A:
Zero
Correct
Option B:
30 J
Option C:
-90 J
Option D:
-60 J

Answer: A

Step-by-step solution

Path $bc$ is vertical on the $P-V$ diagram, so volume is constant (isochoric process). For an isochoric process, work done is $W = \int P \, dV = 0$ . Therefore, the work done by the gas along path $bc$ is zero.

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Exam: NEET (UG) 2024
Paper: 2024 paper
Subject: Physics
Chapter: Work, Power & Energy
Topic: Work Done by a Constant and Variable Force

At any instant of time t , the displacement of any particle is given by 2 t-1 (SI unit) under the influence of force of 5 N . The value of…

Answer: A

Step-by-step solution

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