Heat and Thermodynamics PYQs - Last 5 Years
BITSAT / Physics / Mechanics / 13 recent questions
PhysicsMechanics2021-2025
Practice 13 BITSAT Physics questions from Heat and Thermodynamics. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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2021-2025
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Last 5 Years Heat and Thermodynamics Questions
Showing 13 of 13 filtered questions.
1Heat And Thermodynamics
A cylinder of radius $R$ made of a material of thermal conductivity $k_1$ is surrounded by a cylindrical shell of inner radius $R$ and outer radius $2 R$ made of a material of thermal conductivity $k_2$. The two ends of a combined system ar...
MCQ+3 / -12025
2Heat And Thermodynamics
Two rods $P$ and $Q$ have equal lengths. Their thermal conductivities are $K_1$ and $K_2$ and cross-sectional areas are $A_1$ and $A_2$. When the temperature at ends of each rod are $T_1$ and $T_2$ respectively, the rate of flow of heat thr...
MCQ+3 / -12025
3Heat And Thermodynamics
In a certain process, 400 cal of heat is supplied to a system and at the same time 105 J of mechanical work was done on the system. The increase in its internal energy is
MCQ+3 / -12025
4Heat And Thermodynamics
A vessel is filled with a gas at a pressure of 76 cm of mercury at a certain temperature. The mass of gas is increased by $50 \%$ introducing more gas in the vessel at the same temperature. Now the resultant pressure of the gas is
MCQ+3 / -12025
5Heat And Thermodynamics
In the given cycle $ A B C D A $, the heat required for an ideal monoatomic gas will be
MCQ+3 / -12024
6Heat And Thermodynamics
In a mixture of gases, the average number of degree of freedoms per molecule is 6 . The rms speed of the molecule of the gas is $ c $, then the velocity of sound in the gas is
MCQ+3 / -12024
7Heat And Thermodynamics
A vessel containing 1 mole of \(\mathrm{O}_2\) gas (molar mass 32) at temperature \(T\). The pressure of the gas is \(p\). An identical vessel containing one mole of He gas (molar mass 4) at temperature \(4 T\) has a pressure of
MCQ+3 / -12023
8Heat And Thermodynamics
A Carnot's heat engine works between the temperature \(527^{\circ} \mathrm{C}\) and \(127^{\circ} \mathrm{C}\). What amount of heat should it consume per second to deliver mechanical work at the rate of \(1.0 \mathrm{~kW}\) ?
MCQ+3 / -12023
9Heat And Thermodynamics
One mole of an ideal diatomic gas undergoes a process as shown in the figure. The molar specific heat of the gas in the process is
MCQ+3 / -12022
10Heat And Thermodynamics
A monoatomic gas of molar mass m is kept in a insulated container. Container is moving with velocity v. If the container is suddenly stopped, then the change in the temperature of the gas is
MCQ+3 / -12022
11Heat And Thermodynamics
The ratio of the specific heats \({{{C_v}} \over {{C_p}}} = {1 \over \gamma }\) in terms of degrees of freedom (n) is given by
MCQ+3 / -12021
12Heat And Thermodynamics
Which of the following graphs show the correct relation between conductivity and temperature for a metallic conductor?
MCQ+3 / -12021
13Heat And Thermodynamics
An ideal monoatomic gas is taken round the cycle ABCDA as shown in the p-diagram
The work done during the cycle is
The work done during the cycle is
MCQ+3 / -12021