Gravitation class 9 mcq questions and answers / class 9 science physics gravitation MCQs quiz | ncert class 9 gravitation mcq questions |
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1. All bodies moving freely in vacuum
(a) will have the same speed
(b) will have the same acceleration
(c) will have the same velocity
(d) the force on it will be equal to
Ans b.
2. The gravitational force between two particles is equal to the distance between them.
(a) Proportionate
(b) proportional to square
(c) inversely proportional to the square
(d) inversely proportional
Ans c.
3. The force of gravity between two bodies does not depend on which of the following?
(a) the product of their masses
(b) at the distance between them
(c) the medium between them
(d) the gravitational constant
Ans c
4.value of acceleration due to gravity
(a) would be equal at all places on earth
(b) would be equal at all places
(c) is greater on the moon because its radius is less
(d) depends on the latitude of the earth
Ans d.
5. At which of the following places the value of acceleration due to gravity Would be the maximum?
(a) on the top of Mount Everest
(b) on the top of Qutub Minar
(c) at a place on the equator
(d) at some place in Antarctica
Ans d.
6.Distance covered by a freely falling body from rest is proportional.
(a) the total time of the fall
(b) mass of the body
(c) the square of the acceleration due to gravity
(d) the square of the time of the fall
Ans a
12. Weight of an object
(a) shows its inertia
(b) is equal to its mass, but is represented by a different unit
(c) the force of attraction exerted by the earth on it is equal to
(d) depends on the density of the substance in that object
Ans c
13. When an object is taken from the equator to the poles, its weight
(a) increases
(b) decreases
(c) decreases rapidly
(d) neither increases nor decreases
Ans a
14. The apparent decrease in the weight of an object that is wholly or partly immersed in the liquid is
(b) equal to half the weight of the object
(c) equal to the weight of the fluid displaced by the submerged part of the object
(d) All the above statements are false
Ans c
15. The relative density of a substance is equal to
16.
(a) Density of Matter / Density of Authentic Matter
(b) Density of a substance / Density of another substance
(c) Density of matter / Density of mercury
(d) Density of the original substance / Density of the substance
Ans a
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