1
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a steady state, the temperature at the end $$A$$ and end $$B$$ of a $$20 \mathrm{~cm}$$ long rod $$A B$$ are $$100 \Upsilon$$ and $$0^{\circ} \mathrm{C}$$. The temperature of a point $$9 \mathrm{~cm}$$ from $$A$$ is

A
55$$^\circ$$C
B
45$$^\circ$$C
C
65$$^\circ$$C
D
50$$^\circ$$C
2
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

If two rods of length $$L$$ and $$2 L$$, having coefficients of linear expansion $$\alpha$$ and $$2 \alpha$$ respectively are connected end-to-end, then find the average coefficient of linear expansion of the composite rod.

A
$$\frac{3 \alpha}{2}$$
B
$$\frac{5 \alpha}{2}$$
C
$$\frac{5 \alpha}{4}$$
D
$$\frac{5 \alpha}{3}$$
3
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

A system is taken from state-A to state-B along two different paths. The heat absorbed and work done by the system along these two paths are Q$$_1$$, Q$$_2$$ and W$$_1$$, W$$_2$$ respectively, then

A
$$Q_1=Q_2$$
B
$$W_1=W_2$$
C
$$Q_1-W_1=Q_2-W_2$$
D
$$Q_1+W_1=Q_2+W_2$$
4
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

A gas ($$\gamma$$ = 1.5 ) is suddenly compressed to (1/4 )th its initial volume. Then, find the ratio of its final to initial pressure.

A
1 : 16
B
1 : 8
C
1 : 4
D
8 : 1
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