MHT CET 2021 22th September Morning Shift | Heat and Thermodynamics Question 290 | Physics

A polyatomic gas $$(\gamma=4 / 3)$$ is compressed to $$\left(\frac{1}{8}\right)^{\text {th }}$$ of its volume adiabatically. If its initial pressure is $$\mathrm{P}_0$$, its new pressure will be

$$2 \mathrm{P}_0$$

$$8 \mathrm{P}_0$$

$$6 \mathrm{P}_0$$

$$16 \mathrm{P}_0$$

MHT CET 2021 22th September Morning Shift

MCQ (Single Correct Answer)

-0

If the temperature of the sun is doubled, the rate of energy received by the earth will be increased by a factor

MHT CET 2021 22th September Morning Shift

MCQ (Single Correct Answer)

-0

Which of the following statements is true?

($$\Delta \mathrm{U}=$$ increase in internal energy, $$\mathrm{dW}=$$ work done by the system)

In an adiabatic process $$\Delta \mathrm{U}=\mathrm{dW}$$

In an adiabatic process $$\Delta \mathrm{U}=-\mathrm{dW}$$

In an isothermal process $$\Delta \mathrm{U}=-\mathrm{dW}$$.

In an isothermal process $$\Delta \mathrm{U}=\mathrm{dW}$$

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