MCQ questions for class 9 Science Chapter 10 Gravitation
Question 1: What force is responsible for the falling of an apple from a tree?
Magnetic force
Electrostatic force
Gravitational force
Frictional force
Question 2: The gravitational force between two objects depends on their:
Mass and distance
Volume and shape
Temperature and color
Density and texture
Question 3: If the mass of an object is doubled while keeping the distance constant, what happens to the gravitational force between the two objects?
It doubles
It halves
It quadruples
It remains the same
Question 4: The law stating that the force of attraction between two point masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers is known as:
Newton's first law of motion
Newton's second law of motion
Newton's third law of motion
Newton's law of gravitation
Question 5: What is the SI unit of gravitational force?
Newton
Joule
Watt
Pascal
Question 6: What is the value of acceleration due to gravity on the surface of the Earth?
5 m/s²
9.8 m/s²
10 m/s²
15 m/s²
Question 7: The weight of an object is:
The force with which it is pulled towards the center of the Earth
The mass of the object
The volume of the object
The density of the object
Question 8: Which two factors affect the force of gravity between two objects?
Mass and density
Mass and volume
Mass and distance
Density and distance
Question 9: If the distance between two objects is doubled while keeping the mass constant, what happens to the gravitational force between the two objects?
It doubles
It halves
It quadruples
It becomes one-fourth
Question 10: What is the value of acceleration due to gravity on the moon?
5 m/s²
9.8 m/s²
1.6 m/s²
15 m/s²
Question 11: What happens to the weight of an object when it is taken to the moon?
It increases
It decreases
It remains the same
It becomes zero
Question 12: What is the value of acceleration due to gravity at the center of the Earth?
Zero
5 m/s²
9.8 m/s²
Depends on the mass of the object
Question 13: The weight of an object on the surface of the Earth is the same as its:
Mass
Density
Volume
None of the above
Question 14: If the mass of an object is halved while keeping the distance constant, what happens to the gravitational force between the two objects?
It doubles
It halves
It quadruples
It remains the same
Question 15: The force of gravity between two objects is inversely proportional to the:
Product of their masses
Square of the distance between their centers
Sum of their masses
Cube of the distance between their centers
Question 16: If an object is taken to a height above the Earth's surface, what happens to its weight?
It increases
It decreases
It remains the same
It becomes zero
Question 17: Which planet has a gravitational acceleration approximately equal to that of the Earth?
Mars
Jupiter
Venus
Saturn
Question 18: What happens to the gravitational force between two objects if the distance between them is tripled?
It doubles
It halves
It becomes one-third
It becomes one-ninth
Question 19: Which law of motion is associated with the law of gravitation?
First law of motion
Second law of motion
Third law of motion
Zeroth law of motion
Question 20: What is the value of acceleration due to gravity on the surface of the Earth?
5 m/s²
9.8 m/s²
10 m/s²
15 m/s²
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