Gravitation - Multiple Choice Test


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Question 1

Question:   SI unit of gravitational constant is __________.

1. N m2kg2
2. N m2kg-2
3. N m2s-2
4. N mkg-2

Answer:   2

Question 2

Question:   What is the value of gravitational constant?

1. 6.6734x10-11N m2/kg2
2. 6.6734x10-10N m2/kg2
3. 6.6734x10-11N m/kg2
4. 6.6734x10-11N m2/kg

 Answer:   1

Question 3

Question:   If the distance between two bodies is doubled, the force of attraction F between them will be _______

1. 1/4 F
2. 2 F
3. 1/2 F
4. F

 Answer:   1

Question 4

Question:   The force of gravitation between two bodies in the universe does not depend on

1. the distance between them
2. the product of their masses
3. the sum of their masses
4. the gravitational constant

 Answer:   3

Question 5

Question:   Name the fundamental force which holds the planets in their orbits around the sun.

1. Gravitational force of attraction
2. Electrostatic static force of attraction
3. Nuclear force of attraction
4. Electro static force of attraction

 Answer:   1

Question 6

Question:   When an object is thrown up, the force of gravity _________.

1. is opposite to the direction of motion
2. is in the same direction as the direction of motion
3. becomes zero at the highest point
4. increases as it rises up

 Answer:   1

Question 7

Question:   What is the final velocity of a body moving against gravity when it attains the maximum height?

1. Zero
2.
3.
4. 2gh

 Answer:   1

Question 8

Question:   A stone is dropped from a cliff. Its speed after it has fallen 100 m is

1. 9.8 m/s
2. 44.2 m/s
3. 19.6 m/s
4. 98 m/s

Answer:   2

Question 9

Question:   A ball is thrown up and attains a maximum height of 100 m. Its initial speed was

1. 9.8 m/s
2. 44.2 m/s
3. 19.6 m/s
4. 98 m/s

 Answer:   2

Question 10

Question:   A stone dropped from the roof of a building takes 4 seconds to reach the ground. What is the height of the building?

1. 19.6 m
2. 39.2 m
3. 156.8 m
4. 78.4 m

 Answer:   4

Question 11

Question:   The acceleration due to gravity is zero at ______.

1. the equator
2. poles
3. sea level
4. the centre of the earth

 Answer:   4

Question 12

Question:   If acceleration due to gravity on earth is 10 m/s2 then, the acceleration due to gravity on moon is ________.

1. 1.66 m/s2
2. 16.6 m/s2
3. 10 m/s2
4. 0.166 m/s2

 Answer:   1

Question 13

Question:   The second equation of motion for a freely falling body starting from rest is _______.

1.
2.
3.
4.

 Answer:   3

Question 14

Question:   The acceleration due to gravity of a body moving against gravity is

1. 9.8 m/s2
2. -9.8 m/s2
3.
4. 9.6 m/s

 

Answer:   2

Question 15

Question:   A feather and a coin released simultaneously from the same height do not reach the ground at the same time because of the _______.

1. resistance of the air
2. force of gravity
3. force of gravitation
4. difference in mass

 Answer:   1

Question 16

Question:   The weight of an object of mass 10 kg on earth is_______.

1. 9.8 N
2. 9.8 kg
3. 98 N
4. 98 kg

 Answer:   3

Question 17

Question:   The weight of an object of mass 15 kg at the centre of the earth is _____.

1. 147 N
2. 147 kg
3. zero
4. 150 N

 Answer:   3

Question 18

Question:   Mass remains ______ throughout the universe.

1. varies
2. zero
3. constant
4. negative

 Answer:   3

Question 19

Question:   SI unit of weight is ______.

1. newton
2. kg
3. Wt
4. kg.wt

 

Answer:   1

Question 20

Question:   100 kg.wt=________ .

1. 980 N
2. 9.800 N
3. 1000 N
4. 0.98 N

 Answer:   1

Question 21

Question:   How much would a man, whose mass is 60 kg weigh on the moon?

1. 9.8 N
2. 600 N
3. 60 N
4. 98 N

 Answer:   4

Question 22

Question:   What is the mass of an object whose weight on earth is 196 N?

1. 20 kg
2. 0.20 kg
3. 1960 kg
4. 2 kg

 Answer:   1

Question 23

Question:   The upward force acting on an object submerged in a liquid is ______.

1. thrust
2. buoyant force
3. pressure
4. force of friction

 Answer:   2

Question 24

Question:   The normal force per unit area is called _______.

1. pressure
2. thrust
3. balanced force
4. pascal

 

Answer:   1

Question 25

Question:   If the mass of a ball is 5 kg on earth, then what would be its mass on Jupiter?

1. 5 kg
2. 5000 kg
3. 40000 kg
4. 50 kg

 Answer:   1



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