1
JEE Advanced 2024 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
One mole of a monatomic ideal gas undergoes the cyclic process $\mathrm{J} \rightarrow \mathrm{K} \rightarrow \mathrm{L} \rightarrow \mathrm{M} \rightarrow \mathrm{J}$, as shown in the P-T diagram.
![JEE Advanced 2024 Paper 1 Online Physics - Heat and Thermodynamics Question 2 English](https://app-content.cdn.examgoal.net/fly/@width/image/6y3zli1lwpwe12y/ad330026-489f-4b5e-a478-1d85650a17a0/cc9d65a0-1caa-11ef-a7f1-8b6b33c30c4d/file-6y3zli1lwpwe12z.png?format=png)
Match the quantities mentioned in List-I with their values in List-II and choose the correct option.
[ $\mathcal{R}$ is the gas constant.]
List-I | List-II |
---|---|
(P) Work done in the complete cyclic process | (1) $RT_0 - 4RT_0 \ln 2$ |
(Q) Change in the internal energy of the gas in the process JK | (2) $0$ |
(R) Heat given to the gas in the process KL | (3) $3RT_0$ |
(S) Change in the internal energy of the gas in the process MJ | (4) $-2RT_0 \ln 2$ |
(5) $-3RT_0 \ln 2$ |
2
JEE Advanced 2023 Paper 2 Online
MCQ (Single Correct Answer)
+3
-1
An ideal gas is in thermodynamic equilibrium. The number of degrees of freedom of a molecule of the gas is $n$. The internal energy of one mole of the gas is $U_n$ and the speed of sound in the gas is $\mathrm{v}_n$. At a fixed temperature and pressure, which of the following is the correct option?
3
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
One mole of an ideal gas expands adiabatically from an initial state $\left(T_{\mathrm{A}}, V_0\right)$ to final state $\left(T_{\mathrm{f}}, 5 V_0\right)$. Another mole of the same gas expands isothermally from a different initial state $\left(T_{\mathrm{B}}, V_0\right)$ to the same final state $\left(T_{\mathrm{f}}, 5 V_0\right)$. The ratio of the specific heats at constant pressure and constant volume of this ideal gas is $\gamma$. What is the ratio $T_{\mathrm{A}} / T_{\mathrm{B}}$ ?
4
JEE Advanced 2023 Paper 1 Online
MCQ (Single Correct Answer)
+3
-1
Match the temperature of a black body given in List-I with an appropriate statement in List-II, and choose the correct option.
[Given: Wien's constant as $2.9 \times 10^{-3} \mathrm{~m}-\mathrm{K}$ and $\frac{h c}{e}=1.24 \times 10^{-6} \mathrm{~V}-\mathrm{m}$ ]
[Given: Wien's constant as $2.9 \times 10^{-3} \mathrm{~m}-\mathrm{K}$ and $\frac{h c}{e}=1.24 \times 10^{-6} \mathrm{~V}-\mathrm{m}$ ]
List - I | List - II |
---|---|
(P) $2000 \mathrm{~K}$ | (1) The radiation at peak wavelength can lead to emission of photoelectrons from a metal of work function $4 \mathrm{eV}$. |
(Q) $3000 \mathrm{~K}$ | (2) The radiation at peak wavelength is visible to human eye. |
(R) $5000 \mathrm{~K}$ | (3) The radiation at peak emission wavelength will result in the widest central maximum of a single slit diffraction. |
(S) $10000 \mathrm{~K}$ | (4) The power emitted per unit area is $1 / 16$ of that emitted by a blackbody at temperature $6000 \mathrm{~K}$. |
(5) The radiation at peak emission wavelength can be used to image human bones. |
Questions Asked from Heat and Thermodynamics (MCQ (Single Correct Answer))
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