AP EAPCET 2022 - 5th July Morning Shift | Heat and Thermodynamics Question 2 | Physics

An iron sphere having diameter $$D$$ and mass $$M$$ is immersed in hot water so that the temperature of the sphere increases by $$\delta T$$. If $$\alpha$$ is the coefficient of linear expansion of the iron then the change in the surface area of the sphere is

$$\pi D^2 \cdot \alpha \delta T(\alpha \cdot \delta T-4)$$

$$\pi D^2 \cdot \alpha: \delta T(\alpha \cdot \delta T+4)$$

$$\pi D^2 \cdot \alpha \cdot \delta T(\alpha \cdot \delta T-2)$$

$$\pi D^2 \cdot \alpha \cdot \delta T(\alpha \cdot \delta T+2)$$

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

The work done by a Carnot engine operating between 300 K and 400 K is 400 J. The energy exhausted by the engine is

800 J

1200 J

400 J

1600 J

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

The slopes of the isothermal and adiabatic $$p-V$$ graphs of a gas are by $$S_I$$ and $$S_A$$ respectively. If the heat capacity ratio of the gas is $$\frac{3}{2}$$, then $$\frac{S_I}{S_A}=$$

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

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

$$\frac{1}{2}$$

$$\frac{1}{3}$$

AP EAPCET 2022 - 5th July Morning Shift

MCQ (Single Correct Answer)

-0

The number of rotational degrees of freedom of a diatomic molecule

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