1
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A rocket is fired vertically with a speed of $4 \mathrm{~km} / \mathrm{s}$ from the earth's surface. How far from the earth does the rocket go before returning to the earth?

(Take, radius of earth $=6.4 \times 10^6 \mathrm{~m}$ and $g=10 \mathrm{~m} / \mathrm{s}^2$ )

A

500.24 km

B

914.28 km

C

1230.24 km

D

1750.28 km

2
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A swimming pool has a depth of 22 m and area $700 \mathrm{~m}^2$. Calculate fractional change $\Delta v / v$ of water at the bottom of the swimming pool, given that the bulk modulus of water is $2.2 \times 10^9 \mathrm{Nm}^{-2}, g=10 \mathrm{~m} / \mathrm{s}^2$, and density of water is $1000 \mathrm{~kg} / \mathrm{m}^3$

A

$22 \times 10^{-4}$

B

$0.7 \times 10^{-4}$

C

$0.31 \times 10^{-4}$

D

$10^{-4}$

3
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A hollow spherical body of outer and inner radii of 4 cm and 2 cm respectively, floats half submerged in a liquid of density $2.0 \mathrm{~g} / \mathrm{cm}^3$. The density of the material of the sphere is

A

$1.02 \mathrm{~g} / \mathrm{cm}^2$

B

$1.14 \mathrm{~g} / \mathrm{cm}^2$

C

$1.18 \mathrm{~g} / \mathrm{cm}^2$

D

$124 \mathrm{~g} / \mathrm{cm}^2$

4
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the terminal velocity of a rain drop of radius 0.02 mm ?

[Note that the coefficient of viscosity of air is $1.8 \times 10^{-5} \mathrm{N} / \mathrm{m}^2$, density of water is $1000 \mathrm{~kg} / \mathrm{m}^3$. Use, $g=10 \mathrm{~m} / \mathrm{s}^2$ and density of air can be neglected in comparision with density of water]

A

$4.9 \mathrm{~cm} / \mathrm{s}$

B

$9.8 \mathrm{~cm} / \mathrm{s}$

C

$0.49 \mathrm{~cm} / \mathrm{s}$

D

$49 \mathrm{~cm} / \mathrm{s}$

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