WB JEE 2022 | Heat and Thermodynamics Question 18 | Physics

WB JEE 2022

MCQ (Single Correct Answer)

-0.5

One mole of an ideal monoatomic gas expands along the polytrope PV³ = constant from V₁ to V₂ at a constant pressure P₁. The temperature during the process is such that molar specific heat $${C_V} = {{3R} \over 2}$$. The total heat absorbed during the process can be expressed as

$${P_1}{V_1}\left( {{{V_1^2} \over {V_2^2}} + 1} \right)$$

$${P_1}{V_1}\left( {{{V_1^2} \over {V_2^2}} - 1} \right)$$

$${P_1}{V_1}\left( {{{V_1^3} \over {V_2^2}} - 1} \right)$$

$${P_1}{V_1}\left( {{{V_1^{}} \over {V_2^2}} - 1} \right)$$

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

WB JEE 2021 Physics - Heat and Thermodynamics Question 20 English

In the given figure, 1 represents isobaric, 2 represents isothermal and 3 represents adiabatic processes of an ideal gas. If $$\Delta$$U₁, $$\Delta$$U₂ and $$\Delta$$U₃ be the changes in internal energy in these processes respectively, then

$$\Delta$$U₁ < $$\Delta$$U₂ < $$\Delta$$U₃

$$\Delta$$U₁ > $$\Delta$$U₂ < $$\Delta$$U₃

$$\Delta$$U₁ = $$\Delta$$U₂ > $$\Delta$$U₃

$$\Delta$$U₁ > $$\Delta$$U₂ > $$\Delta$$U₃

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

If pressure of real gas O₂, in a container is given by $$p = {{RT} \over {2V - b}} - {a \over {4{b^2}}}$$, then the mass of the gas in the container is

32 g

16 g

4 g

64 g

WB JEE 2021

MCQ (Single Correct Answer)

-0.25

300 g of water at 25$$^\circ$$C is added to 100 g of ice at 0$$^\circ$$C. The final temperature of the mixture is

12.5$$^\circ$$C

0$$^\circ$$C

25$$^\circ$$C

50$$^\circ$$C

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