MHT CET 2025 25th April Evening Shift | Heat and Thermodynamics Question 7 | Physics

The initial average kinetic energy of the molecules was E , when a gas sample is at $27^{\circ} \mathrm{C}$. When the gas is heated to $327^{\circ} \mathrm{C}$, then the final average kinetic energy will be

$\quad \sqrt{2} \mathrm{E}$

2 E

300 E

327 E

MHT CET 2025 25th April Evening Shift

MCQ (Single Correct Answer)

-0

A sample of an ideal gas $\left(\gamma=\frac{5}{3}\right)$ is heated at constant pressure. If 100 J of heat is supplied to the gas, the work done by the gas is

150 J

60 J

40 J

250 J

MHT CET 2025 25th April Evening Shift

MCQ (Single Correct Answer)

-0

A balloon is filled at $27^{\circ} \mathrm{C}$ and 1 atmospheric pressure by volume $500 \mathrm{~m}^3$ helium gas. At $-3^{\circ} \mathrm{C}$ and 0.5 atmospheric pressure, the volume of helium gas will be

$500 \mathrm{~m}^3$

$700 \mathrm{~m}^3$

$900 \mathrm{~m}^3$

$1000 \mathrm{~m}^3$

MHT CET 2025 25th April Evening Shift

MCQ (Single Correct Answer)

-0

The volume of a metal sphere increases by $0.33 \%$ when its temperature is raised by $50^{\circ} \mathrm{C}$. The coefficient of linear expansion of the metal is

$2.2 \times 10^{-5} /{ }^{\circ} \mathrm{C}$

$6.6 \times 10^{-5} /{ }^{\circ} \mathrm{C}$

$13.2 \times 10^{-5} /{ }^{\circ} \mathrm{C}$

$19.8 \times 10^{-5} /{ }^{\circ} \mathrm{C}$

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