MHT CET 2021 22th September Evening Shift | Heat and Thermodynamics Question 80 | Physics

The change in internal energy of the mass of a gas, when the volume changes from '$$\mathrm{V}$$' to '$$2 \mathrm{~V}$$' at constant pressure 'P' is ($$\gamma=$$ Ratio of Cp to Cv)

$$\frac{\mathrm{PV}}{(\gamma-1)}$$

$$\frac{\mathrm{P}}{(\gamma-1)}$$

$$\frac{\gamma \mathrm{PV}}{(\gamma-1)}$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

If the pressure of an ideal gas is decreased by $$10 \%$$ isothermally, then its volume will

decrease by $$8 \%$$

decrease by $$9 \%$$

increase by $$8 \%$$

increase by $$11.1 \%$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

An ideal gas having molar mass '$$\mathrm{M}_0$$', has r.m.s. velocity 'V' at temperature 'T'. Then

$$\mathrm{VT}^2=$$ constant

$$\frac{\mathrm{v}^2}{\mathrm{~T}}=$$ constant

$$\mathrm{V}^2 \mathrm{T}=$$ constant

$$\mathrm{V}$$ is independent of $$\mathrm{T}$$

MHT CET 2021 22th September Evening Shift

MCQ (Single Correct Answer)

-0

An ideal gas at $$27^{\circ} \mathrm{C}$$ is compressed adiabatically to $$(8 / 27)$$ of its original volume. If ratio of specific heats, $$\gamma=5 / 3$$ then the rise in temperature of the gas is

500 K

125 K

250 K

375 K

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