1
MHT CET 2021 21th September Morning Shift
+1
-0

The molar specific heats of an ideal gas at constant pressure and volume are denoted by '$$\mathrm{C}_{\mathrm{p}}$$' and '$$C_v$$' respectively. If $$\gamma=\frac{C_p}{C_v}$$ and '$$R$$' is universal gas constant, then $$C_v$$ is equal to

A
$$\frac{\mathrm{R}}{\gamma-1}$$
B
$$\gamma \mathrm{R}$$
C
$$\frac{1+\gamma}{1-\gamma}$$
D
$$\frac{\gamma-1}{\mathrm{R}}$$
2
MHT CET 2021 21th September Morning Shift
+1
-0

The temperature difference bewtween two sides of metal plate, $$3 \mathrm{~cm}$$ thick is $$15^{\circ} \mathrm{C}$$. Heat is transmitted through plate at the rate of $$900 \mathrm{~kcal}$$ per minute per $$\mathrm{m}^2$$ at steady state. The thermal conductivity of metal is

A
$$1.8 \times 10^{-2} \frac{\mathrm{kcal}}{\mathrm{ms}^{\circ} \mathrm{C}}$$
B
$$4.5 \times 10^{-2} \frac{\mathrm{kcal}}{\mathrm{ms}^{\circ} \mathrm{C}}$$
C
$$3 \times 10^{-2} \frac{\mathrm{kcal}}{\mathrm{ms}^{\circ} \mathrm{C}}$$
D
$$6 \times 10^{-2} \frac{\mathrm{kcal}}{\mathrm{ms}^{\circ} \mathrm{C}}$$
3
MHT CET 2021 21th September Morning Shift
+1
-0

A black body has maximum wavelength '$$\lambda_{\mathrm{m}}$$' at temperature $$2000 \mathrm{~K}$$. Its corresponding wavelength at temperature $$3000 \mathrm{~K}$$ will be

A
$$\frac{4 \lambda_m}{9}$$
B
$$\frac{2 \lambda_m}{9}$$
C
$$\frac{3 \lambda_{\mathrm{m}}}{2}$$
D
$$\frac{9}{4} \lambda_{\mathrm{m}}$$
4
MHT CET 2021 21th September Morning Shift
+1
-0

A monoatomic gas at pressure '$$\mathrm{P}$$' having volume '$$\mathrm{V}$$' expands isothermally to a volume $$2 \mathrm{~V}$$ and then adiabatically to a volume $$16 \mathrm{~V}$$. The final pressure of the gas is $$\left(\gamma=\frac{5}{3}\right)$$

A
$$\frac{P}{64}$$
B
$$\frac{\mathrm{P}}{128}$$
C
$$\frac{P}{8}$$
D
$$\frac{\mathrm{P}}{32}$$
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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