MHT CET 2020 16th October Morning Shift | Heat and Thermodynamics Question 234 | Physics

For a gas, $$\frac{R}{C_V}=0.4$$, where $$R$$ is universal gas constant and $$C_V$$ is the molar specific heat at constant volume. The gas is made up of molecules, which are

polyatomic

rigid diatomic

monoatomic

non-rigid diatomic

MHT CET 2020 16th October Morning Shift

MCQ (Single Correct Answer)

-0

A monoatomic gas of pressure $$p$$ having volume $$V$$ expands isothermally to a volume $$2V$$ and then adiabatically to a volume $$16 \mathrm{~V}$$. The final pressure of the gas is (ratio of specific heats $$=\frac{5}{3}$$

$$\frac{p}{8}$$

$$\frac{p}{16}$$

$$\frac{p}{64}$$

$$\frac{p}{32}$$

MHT CET 2019 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

The SI unit and dimensions of Stefan's constant $\sigma$ in case of Stefan's law of radiation is

$\frac{\mathrm{J}}{\mathrm{m}^3 \mathrm{~s}^4}$, $\left[M^1 L^0 T^{-3} K^{-4}\right]$

$\frac{\mathrm{J}}{\mathrm{m}^2 \mathrm{~s}^4 \mathrm{~K}}$, $\left[M^1 L^0 T^{-3} K^3\right]$

$\frac{\mathrm{J}}{\mathrm{m}^3 \mathrm{~s} \mathrm{~K}^4},\left[\mathrm{M}^{1} \mathrm{L}^0 \mathrm{~T}^{-3} \mathrm{~K}^4\right]$

$\frac{\mathrm{J}}{\mathrm{m}^2 \mathrm{~s} \mathrm{~K}^4},\left[\mathrm{M}^1 \mathrm{~L}^0 \mathrm{~T}^{-3} \mathrm{~K}^{-4}\right]$

MHT CET 2019 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

The rms speed of oxygen molecule in a gas is $u$, If the temperature is doubled and the molecules dissociates into two atoms, the rms speed will be

u$\sqrt2$

PREVIOUS NEXT

MHT CET Subjects