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Physics · PYQ NEET UG 2020

हिन्दी

Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is:

  1. adiabatic
  2. isochoric
  3. isobaric
  4. isothermal

Correct answer · Option 1

adiabatic

Explanation

Free expansion into vacuum is thermally insulated and involves no work done, hence it is an adiabatic process.

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