MHT CET 2026 15th April Morning Shift | Heat and Thermodynamics Question 70 | Physics

A monoatomic gas is stored in a thermally insulated container and the gas is suddenly compressed to $\left(\dfrac{1}{8}\right)^{th}$ of its initial volume. The ratio of final pressure to initial pressure is

$16:1$

$40:1$

$32:1$

$28:1$

MHT CET 2026 15th April Morning Shift

MCQ (Single Correct Answer)

-0

The average force applied on the walls of a closed container depends on temperature (T) as (T is the temperature of an ideal gas)

$T^2$

$T^3$

$T^1$

$T^{-1}$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

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

$\frac{3}{2} \lambda_{\mathrm{m}}$

$\frac{16}{81} \lambda_m$

$\frac{81}{16} \lambda_m$

$\frac{2}{3} \lambda_m$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

The relation between efficiency $(\eta)$ of Carnot engine and coefficient of performance $\left(\eta_1\right)$ of refrigerator is

$\eta=\frac{1}{1+\eta_1}$

$\eta=\frac{1}{1-\eta_1}$

$\quad \eta=\frac{\eta_1}{1-\eta_1}$

$\eta=\frac{1+\eta_1}{\eta_1}$

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