1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The weight of a body on the surface of the earth is 63 N. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth?

A
35 N
B
28 N
C
18 N
D
40 N
2
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A space ship is launched into a circular orbit close to earth’s surface. What additional velocity has now to be imparted to the spaceship in the orbit to overcome the gravitational pull?

(Radius of earth = 6400 km, g = 9.8 m/s$$^2$$)

A
3.28 km/s
B
12 km/s
C
10 km/s
D
40 km/s
3
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

What is the maximum height attained by a body projected with a velocity equal to one-third of the escape velocity from the surface of the earth? (Radius of the earth $$=R$$ )

A
$$R / 2$$
B
$$R / 3$$
C
$$R / 5$$
D
$$R / 8$$
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

Two satellites $$S_1$$ and $$S_2$$ are revolving round a planet in coplanar circular orbits of radii $$r_1$$ and $$r_2$$ in the same direction, respectively. Their respective periods of revolution are $$1 \mathrm{~h}$$ and $$8 \mathrm{~h}$$. The radius of orbit of satellite $$S_1$$ is equal to $$10^4 \mathrm{~km}$$. What will be their relative speed (in $$\mathrm{km} / \mathrm{h}$$) when they are closest?

A
$$\pi / 2 \times 10^4$$
B
$$\pi \times 10^4$$
C
$$2 \pi \times 10^4$$
D
$$4 \pi \times 10^4$$
AIIMS Subjects
EXAM MAP