1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The distance through which one has to dig the Earth from its surface, so as to reach the point where the acceleration due to gravity is reduced by 40% of that at the surface of the Earth, is (radius of Earth is 6400 km)

A
2560 km
B
3000 km
C
3260 km
D
1560 km
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Infinite number of masses each of 3kg are placed along a straight line at the distances of 1 m, 2m, 4m, 8m, ...... from a point O on the same line. If G is the universal gravitational constant, then the magnitude of gravitational field intensity at O is

A
1.0 G
B
2.0 G
C
3.0 G
D
4.0 G
3
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

A particle is kept on the surface of a uniform sphere of mass 1000 kg and radius 1 m. The work done per unit mass against the gravitational force between them is

[G = 6.67 $$\times$$ 10$$^{-11}$$ Nm$$^2$$ kg$$^{-2}$$]

A
$$\mathrm{3.35\times10^{-10}~Jkg^{-1}}$$
B
$$\mathrm{-3.35\times10^{-10}~Jkg^{-1}}$$
C
$$\mathrm{6.67\times10^{-8}~Jkg^{-1}}$$
D
$$\mathrm{-3.35\times10^{-8}~Jkg^{-1}}$$
4
AP EAPCET 2021 - 19th August Morning Shift
MCQ (Single Correct Answer)
+1
-0
The acceleration due to gravity at a height (1/20)th of the radius of Earth above the Earth's surface is 9 ms$$^{-2}$$. Its value at an equal depth below the surface of earth is
A
9 ms$$^{-2}$$
B
9.25 ms$$^{-2}$$
C
9.5 ms$$^{-2}$$
D
9.8 ms$$^{-2}$$
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