If ∆U and ∆W represent the increase in internal energy and work done by the system

⇦

⇨

If ∆U and ∆W represent the increase in internal energy and work done by the system respectively in a thermodynamical process, which of the following is true?

Options

(a) ∆U = – ∆W, in an adiabatic process
(b) ∆U = ∆W, in an isothermal process
(c) ∆U = ∆W, in an adiabatic process
(d) ∆U = – ∆W, in an isothermal process

Correct Answer:

∆U = – ∆W, in an adiabatic process

Explanation:

BY first law of thermodynamics, ∆Q = ∆U + ∆W
In adiabatic process, ∆Q = 0 ∆U = – ∆W
In isothermal process, ∆U = 0 ∆Q = ∆W

Related Questions:

1. A man weighing 60 kg climbs a staircase carrying a 20 kg load on his hand
2. A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
3. The ratio of specific charge of an α-particle to that of a proton is
4. A current of 5 A is flowing at 220 V in the primary coil of a transformer. If the voltage
5. A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)

Topics: Thermodynamics (179)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends