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Kinetic Theory

JEE Main 2024 (Online) 27th January Morning ShiftMCQEasy📈 Topic in 14% papers+4−1
Ques. 1JEE Main 2024, 27 January (Morning Shift)

The average kinetic energy of a monatomic molecule is 0.414 eV at temperature : (Use KB = 1.38 10-23 J/K)

  1. 3000 K
  2. 3200 K
  3. 1600 K
  4. 1500 K

Answer

(2) 3200 K

Solution

K = 32kBT ( monatomic: 3 translational degrees of freedom)

T = 2 K3kB = 2 0.414 1.6 10-193 1.38 10-23

= 1.3248 10-194.14 10-23

= 3200 K

Answer: (2)

Keep practising — Kinetic Theory

Ques. 2JEE Main 2024, 27 January (Evening Shift)

The total kinetic energy of 1 mole of oxygen at 27 is : [Use universal gas constant (R)=8.31 J/mole K]

  1. 6232.5 J
  2. 5670.5 J
  3. 6845.5 J
  4. 5942.0 J

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