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
