1
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A test tube of mass 6 g and uniform area of cross-section $10 \mathrm{~cm}^2$ is floating in water vertically when 10 g of mercury is in the bottom. The tube is depressed by a small amount and then released. The time period of oscillation is (acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ )
A
0.75 s
B
0.5 s
C
0.25 s
D
0.85 s
2
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
What is the height from the surface of earth, where acceleration due to gravity will be $1 / 4$ of that of the earth? $\left(R_E=6400 \mathrm{~km}\right)$
A
6400 km
B
3200 km
C
1600 km
D
640 km
3
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Depth of a river is 100 m magnitude of compressibility of the water is $05 \times 10^{-9} \mathrm{~N}^{-1} \mathrm{~m}^2$. The fractional compression in water at the bottom of the river is (acceleration due to gravity $=10 \mathrm{~m} / \mathrm{s}^2$ )
A
$0.9 \times 10^3$
B
$0.5 \times 10^{-3}$
C
$2 \times 10^{-3}$
D
$1.3 \times 10^{-2}$
4
AP EAPCET 2024 - 20th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Two mercury drops, each with same radius $r$ merged to form a bigger drop. $T$ is the surface tension of single drop, then the surface energy of bigger drop is given by
A
$2 \pi r^2 T$
B
$2^{\frac{5}{3}} \pi r^2 T$
C
$2 \pi r^2 T^2$
D
$2^{\frac{8}{3}} \pi r^2 T$
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