1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

5 g of ice at $$-30^{\circ} \mathrm{C}$$ and 20 g of water at $$35^{\circ} \mathrm{C}$$ are mixed together in a calorimeter. The final temperature of the mixture is (Neglect heat capacity of the calorimeter, specific heat capacity of ice $$=0.5 \mathrm{cal} \mathrm{g}^{-1}{ }^{\circ} \mathrm{C}^{-1}$$ and latent heat of fusion of ice $$=80 \mathrm{cal} \mathrm{g}^{-1}$$ and specific heat. capacity of water $$=1 \mathrm{cal} \mathrm{g}^{-1}{ }^{\circ} \mathrm{C}^{-1}$$)

A
$$0^{\circ} \mathrm{C}$$
B
$$4^{\circ} \mathrm{C}$$
C
$$5^{\circ} \mathrm{C}$$
D
$$9^{\circ} \mathrm{C}$$
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

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

A
$$\pi D^2 \cdot \alpha \delta T(\alpha \cdot \delta T-4)$$
B
$$\pi D^2 \cdot \alpha: \delta T(\alpha \cdot \delta T+4)$$
C
$$\pi D^2 \cdot \alpha \cdot \delta T(\alpha \cdot \delta T-2)$$
D
$$\pi D^2 \cdot \alpha \cdot \delta T(\alpha \cdot \delta T+2)$$
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-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

A
800 J
B
1200 J
C
400 J
D
1600 J
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-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 $$\frac{S_I}{S_A}=$$

A
$$\frac{3}{2}$$
B
$$\frac{2}{3}$$
C
$$\frac{1}{2}$$
D
$$\frac{1}{3}$$
AP EAPCET Subjects
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