1
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the escape velocity on earth is $11.2 \mathrm{~km} / \mathrm{s}$, its value for a planet having double the radius and 8 time the mass of earth is

A

$22.4 \mathrm{~km} / \mathrm{s}$

B

$24.3 \mathrm{~km} / \mathrm{s}$

C

$26.6 \mathrm{~km} / \mathrm{s}$

D

$44.8 \mathrm{~km} / \mathrm{s}$

2
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the bulk modulus of water is $2 \times 10^9 \mathrm{Nm}^{-2}$, then the required pressure to reduce the given volume of water by $2 \%$ is

A

$2 \times 10^7 \mathrm{Nm}^{-2}$

B

$4 \times 10^7 \mathrm{Nm}^{-2}$

C

$8 \times 10^6 \mathrm{Nm}^{-2}$

D

$5 \times 10^7 \mathrm{Nm}^{-2}$

3
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The surface tension of 70 dynes $/ \mathrm{cm}$ is equal to

A

$70 \mathrm{~N} / \mathrm{m}$

B

$70 \times 10^{-3} \mathrm{~N} / \mathrm{m}$

C

$7 \times 10^2 \mathrm{~N} / \mathrm{m}$

D

$7 \times 10^3 \mathrm{~N} / \mathrm{m}$

4
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Assertion A thermos bottle consists of a double walled glass vessel with the space between the two walls evacuated, so that the heat transfer between the contents of the bottle and outside is minimised.

Reason The vacuum between the two walls inhibits the heat transfer by radiation mechanism.

Which of the following is correct?

A

Assertion is true, Reason is true and Reason is the correct explanation for Assertion.

B

Assertion is true, Reason is true but Reason is not the correct explanation for Assertion.

C

Assertion is true but Reason is false.

D

Assertion is false but Reason is true.

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