EASY
9th CBSE
IMPORTANT
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The force of attraction between two unit masses separated by a unit distance is called

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Important Questions on Gravitation

MEDIUM
9th CBSE
IMPORTANT
The weight of an object at the centre of the earth of radius R is
EASY
9th CBSE
IMPORTANT
An apple falls from a tree because of gravitational attraction between the earth and apple. If F1 is the magnitude of force exerted by the earth on the apple and F2 is the magnitude of force exerted by apple on earth, then
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9th CBSE
IMPORTANT
Neglecting rotation of the earth, if suddenly the attractive power of the earth drops to zero, a man standing on the earth will 
MEDIUM
9th CBSE
IMPORTANT
For no change in the mass of the earth, if its radius is halved the weight of an object of mass 10 kg will be:
EASY
9th CBSE
IMPORTANT
An apple falls from a tree because of gravitation between the earth and apple. If F1 is the magnitude of force exerted by the earth on the apple and F2 is the magnitude of force exerted by apple on earth, then:
MEDIUM
9th CBSE
IMPORTANT
An object of mass 10 kg is dropped from a building of height 40 m. Given the best description of relationship between gravitational potential energy and kinetic energy, after 2 seconds, g=10 m/s2 is
EASY
9th CBSE
IMPORTANT
The gravitational effect of which of the following causes tidal waves in sea?
EASY
9th CBSE
IMPORTANT
Suppose the gravitational attraction of earth suddenly disappear, then