1
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The maximum length of water column that can stay without falling in a vertically held capillary tube of diameter 1 mm and open at both the ends is (Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ and surface tension of water $=0.07 \mathrm{Nm}^{-1}$ )

A

2.8 cm

B

5.6 cm

C

1.4 cm

D

0 cm

2
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A steel pendulum clock manufactured at $32^{\circ} \mathrm{C}$ and working at $47^{\circ} \mathrm{C}$ is nearly

(Coefficient of linear expansion of steel $=12 \times 10^{-6} /{ }^{\circ} \mathrm{C}$ )

A

7.8 s slow per day

B

7.8 s fast per day

C

15.6 s slow per day

D

$15.6 s$ fast per day

3
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A metal metre scale that is accurate up to 0.5 mm is made at a temperature of $25^{\circ} \mathrm{C}$. The range of temperatures within which it can be used is (Coefficient of linear expansion of the metal $=10^{-5} /{ }^{\circ} \mathrm{C}$ )

A

$+25^{\circ} \mathrm{C}$ to $+75^{\circ} \mathrm{C}$

B

$+25^{\circ} \mathrm{C}$ to $+50^{\circ} \mathrm{C}$

C

$-25^{\circ} \mathrm{C}$ to $+75^{\circ} \mathrm{C}$

D

$0^{\circ} \mathrm{C}$ to $+50^{\circ} \mathrm{C}$

4
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A Carnot engine uses diatomic gas as a working substance. During the adiabatic expansion part of the cycle, if the volume of the gas becomes 32 times its initial volume, then the efficiency of the engine is

A

$100 \%$

B

$75 \%$

C

$50 \%$

D

$25 \%$

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