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Gravitation(General Knowledge > General Science ) Questions and Answers
Home
Topic
General Knowledge
General Science
Gravitation
Question 1.
The gravitational force between two spheres of masses 1000 kg kept 1m apart is
10 N
6.673 * 10-5
12 N
5 N
Explanation:-
Answer: Option B. ->
6.673 * 10-5
Question 2.
If the mass of earth is 6
7 ms-1
7 ms-2
7.3 ms-1
7.3 ms-2
Explanation:-
Answer: Option D. ->
7.3 ms-2
Question 3.
Value of g increases with the
decrease in altitude
increase in altitude
increase in body mass
decrease in body mass
Explanation:-
Answer: Option A. ->
decrease in altitude
Question 4.
2 lead spheres having a mass of 1000 kg each are placed with their centers 1 m apart
6.673 x105
66.73 x105
6673 x10-5
6.673 x10-5
Explanation:-
Answer: Option D. ->
6.673 x10-5
Question 5.
The gravitational force of attraction between satellite and earth provides
centripetal force
centrifugal force
resistive force
momentum force
Explanation:-
Answer: Option A. ->
centripetal force
Question 6.
The moon completes one revolution around the Earth in
30 days
24 days
26 days
27.3 days
Explanation:-
Answer: Option D. ->
27.3 days
Question 7.
To move around the Earth, a satellite requires
centrifugal force
centripetal force
dynamic force
translatory force
Explanation:-
Answer: Option B. ->
centripetal force
Question 8.
With mass ‘m’, altitude ‘h’, radius ro and velocity vo, the centripetal force is equal to
Fc =( mvo²) ⁄ ro
Fc =( mvo) ⁄ ro
Fc =( mro²) ⁄ vo
Fc =( mvo² + ro)
Explanation:-
Answer: Option A. ->
Fc =( mvo²) ⁄ ro
Question 9.
The distance of moon from the Earth is
395,000 km
420,000 km
380,000 km
450,000 km
Explanation:-
Answer: Option C. ->
380,000 km
Question 10.
In SI units, the value of gravitational constant(G) is
6.673 x10-11
8.673 x105
6.673 x105
4.673 x105
Explanation:-
Answer: Option A. ->
6.673 x10-11
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