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Solution


Q.

Identify the characteristics of an adiabatic process in a monoatomic gas.

(A) Internal energy is constant.

(B) Work done in the process is equal to the change in internal energy.

(C) The product of temperature and volume is a constant.

(D) The product of pressure and volume is a constant.

(E) The work done to change the temperature from T1 to T2 is proportional to (T2–T1)

Choose the correct answer from the options given below:          [2025]
1 (A), (C), (D) only  
2 (A), (C), (E) only  
3 (B), (E) only  
4 (B), (D) only  

Ans.

(3)

For adiabatic process, Q = 0

Q=△U+W=0 ⇒ W=–△U

W=–nCv△T ⇒ |W|=nCv△T ∝T2–T1

B, E are correct