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NCERT Class - 9 Science Solutions: Chapter 10 - Gravitation Part 1
Multiple Choice Questions
Question 1:
Two objects of different masses falling freely near the surface of moon would
- Have same velocities at any instant
- Have different accelerations
- Experience forces of same magnitude
- Undergo a change in their inertia
Answer: A
Question 2:
The value of acceleration due to gravity
- Is same on equator and poles
- Is least on poles
- Is least on equator
- Increases from pole to equator
Answer: C
Question 3:
The gravitational force between two objects is F. If masses of both objects are halved without changing distance between them, then the gravitational force would become
Answer: A
Question 4:
A boy is whirling a stone tied with a string in a horizontal circular path. If the string breaks, the stone
- Will continue to move in the circular path
- Will move along a straight line towards the center of the circular path
- Will move along a straight line tangential to the circular path
- Will move along a straight line perpendicular to the circular path away from the boy
Answer: C
Question 5:
An object is put one by one in three liquids having different densities. The object floats with parts of their volumes outside the liquid surface in liquids of respectively. Which of the following statement is correct?
Answer: D
Question 6:
In the relation , the quantity G
- Depends on the value of at the place of observation
- Is used only when the earth is one of the two masses
- Is greatest at the surface of the earth
- Is universal constant of nature
Answer: D
Question 7:
Law of gravitation gives the gravitational force between
- The earth and a point mass only
- The earth and Sun only
- Any two bodies having some mass
- Two charged bodies only
Answer: C