MHT CET 2023 10th May Evening Shift | Heat and Thermodynamics Question 144 | Physics

A metal rod $$2 \mathrm{~m}$$ long increases in length by $$1.6 \mathrm{~mm}$$, when heated from $$0^{\circ} \mathrm{C}$$ to $$60^{\circ} \mathrm{C}$$. The coefficient of linear expansion of metal rod is

$$1.33 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$

$$1.66 \times 10^{-5} /{ }^{\circ} \mathrm{C}$$

$$1.33 \times 10^{-3} /{ }^{\circ} \mathrm{C}$$

$$1.66 \times 10^{-3} /{ }^{\circ} \mathrm{C}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

We have a jar filled with gas characterized by parameters $$\mathrm{P}, \mathrm{V}, \mathrm{T}$$ and another jar B filled with gas having parameters $$2 \mathrm{P}, \frac{\mathrm{V}}{4}, 2 \mathrm{~T}$$, where symbols have their usual meaning. The ratio of number of molecules in jar A to those in jar B is

$$1: 1$$

$$1: 2$$

$$2: 1$$

$$4: 1$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

An insulated container contains a monoatomic gas of molar mass '$$\mathrm{m}$$'. The container is moving with velocity '$$\mathrm{V}$$'. If it is stopped suddenly, the change in temperature of a gas is [R is gas constant]

$$\frac{\mathrm{MV}^2}{\mathrm{R}}$$

$$\frac{M V^2}{2 R}$$

$$\frac{\mathrm{MV}^2}{3 \mathrm{R}}$$

$$\frac{3 \mathrm{MV}^2}{2 \mathrm{R}}$$

MHT CET 2023 10th May Evening Shift

MCQ (Single Correct Answer)

-0

In a vessel, the ideal gas is at a pressure $$\mathrm{P}$$. If the mass of all the molecules is halved and their speed is doubled, then resultant pressure of the gas will be

$$4 \mathrm{P}$$

$$2 \mathrm{P}$$

$$\mathrm{P}$$

$$\frac{\mathrm{P}}{2}$$

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