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 Physics Question

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. The total radiant energy per unit area, normal to the direction of incidence
  2. In cyclotron, for a given magnet, radius of the semicircle traced by positive ion
  3. A concave lens of focal length f forms an image which is 1/3 times the size
  4. For a wave propagating in a medium, identify the property that is independent
  5. In p- type semiconductor, the acceptor level lies

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*