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

A solid cylinder of mass $m$ and radius $R$ rolls down on an inclined plane of height 30 m without slipping. The speed of its centre of mass, when the cylinder reaches the bottom is

[use $g=10 \mathrm{~m} / \mathrm{s}^2$ ]

A

$10 \mathrm{~m} / \mathrm{s}$

B

$20 \mathrm{~m} / \mathrm{s}$

C

$30 \mathrm{~m} / \mathrm{s}$

D

$40 \mathrm{~m} / \mathrm{s}$

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

A simple pendulum consists of a small sphere of mass $m$ suspended by a thread of length $l$. The sphere carries a positive charge $q$. The pendulum is allowed to do small oscillations in uniform electric field $E$ with direction vertically upwards. The time period of oscillation is

A

$2 \pi \sqrt{\frac{1}{g}}$

B

$2 \pi \sqrt{\frac{m l}{q E}}$

C

$2 \pi \sqrt{\frac{1}{g+\frac{q}{m} E}}$

D

$2 \pi \sqrt{\frac{1}{g-\frac{q}{m} E}}$

3
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

4
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

$10^{-4}$

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