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Thermodynamics (Physics)

JEE Main 2025 (Online) 23rd January Morning ShiftMatchingEasy📈 Topic in 50% papers+4−1
Ques. 1JEE Main 2025, 23 January (Morning Shift)

Match List - I with List - II Choose the correct answer from the options given below:

  1. A-I, B-III, C-II, D-IV
  2. A-I, B-IV, C-II, D-III
  3. A-III, B-I, C-IV, D-II
  4. A-III, B-IV, C-I, D-II

Answer

(4) A-III, B-IV, C-I, D-II

Solution

A: P 1V PV= constant isothermal (III)

B: Q= U+P V with both parts present isobaric (IV)

C: Q=0 adiabatic (I)

D: W=P V=0 isochoric (II)

Answer: (4)

Keep practising — Thermodynamics (Physics)

Ques. 2JEE Main 2025, 23 January (Morning Shift)

An ideal gas initially at 0 temperature, is compressed suddenly to one fourth of its volume. If the ratio of specific heat at constant pressure to that at constant volume is 3/2, the change in temperature due to the thermodynamic process is K.

Ques. 3JEE Main 2025, 23 January (Evening Shift)

Water of mass m gram is slowly heated to increase the temperature from T1 to T2. The change in entropy of the water, given specific heat of water is 1 J kg-1 K-1, is :

  1. m(T2-T1)
  2. zero
  3. m ( T1T2 )
  4. m ( T2T1 )
Ques. 4JEE Main 2025, 23 January (Evening Shift)

[figure] Using the given P-V diagram, the work done by an ideal gas along the path ABCD is :

  1. 3P0 V0
  2. -3P0 V0
  3. -4P0 V0
  4. 4P0 V0
Ques. 5JEE Main 2025, 22 January (Evening Shift)

Given are statements for certain thermodynamic variables, Choose the correct answer from the options given below :

  1. C and D Only
  2. A and B Only
  3. D and A Only
  4. B and C Only

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