JEE Main 2024 (Online) 5th April Evening Shift | Heat and Thermodynamics Question 14 | Physics

During an adiabatic process, if the pressure of a gas is found to be proportional to the cube of its absolute temperature, then the ratio of $$\frac{\mathrm{C}_{\mathrm{P}}}{\mathrm{C}_{\mathrm{V}}}$$ for the gas is :

$$\frac{5}{3}$$

$$\frac{3}{2}$$

$$\frac{7}{5}$$

$$\frac{9}{7}$$

JEE Main 2024 (Online) 5th April Evening Shift

MCQ (Single Correct Answer)

-1

If $$\mathrm{n}$$ is the number density and $$\mathrm{d}$$ is the diameter of the molecule, then the average distance covered by a molecule between two successive collisions (i.e. mean free path) is represented by :

$$\frac{1}{\sqrt{2} \mathrm{n} \pi \mathrm{d}^2}$$

$$\frac{1}{\sqrt{2} n^2 \pi^2 d^2}$$

$$\frac{1}{\sqrt{2 n \pi d^2}}$$

$$\sqrt{2} \mathrm{n} \pi \mathrm{d}^2$$

JEE Main 2024 (Online) 5th April Morning Shift

MCQ (Single Correct Answer)

-1

The heat absorbed by a system in going through the given cyclic process is :

JEE Main 2024 (Online) 5th April Morning Shift Physics - Heat and Thermodynamics Question 8 English

61.6 J

431.2 J

19.6 J

616 J

JEE Main 2024 (Online) 5th April Morning Shift

MCQ (Single Correct Answer)

-1

If the collision frequency of hydrogen molecules in a closed chamber at $$27^{\circ} \mathrm{C}$$ is $$\mathrm{Z}$$, then the collision frequency of the same system at $$127^{\circ} \mathrm{C}$$ is :

$$\frac{\sqrt{3}}{2} \mathrm{Z}$$

$$\frac{2}{\sqrt{3}} \mathrm{Z}$$

$$\frac{3}{4} \mathrm{Z}$$

$$\frac{4}{3} \mathrm{Z}$$

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