Gravity

Total Questions: 19

1 - گریویٹیشن کا قانون ------ سے مطابقت رکھتاہے؟

A ) نیوٹن کا پہلاقانون
B ) نیوٹن کا تیسرا قانون ✅
C ) نیوٹن کا دوسرا قانون
D ) کولمب کا قانون

2 - The weight of an object at the center of the earth of radius R is ------:

A ) Weightless ✅
B ) Same
C ) Rises a little
D ) None of these

3 - When a baseball is thrown vertically upward what is its maximum acceleration?

A ) 9.8 upward
B ) 9.8 downward
C ) -9.8 downward ✅
D ) None of these

4 - If the air resistance is zero all objects regardless of their masses fall with :

A ) Same Velocity
B ) Same Acceleration ✅
C ) Different acceleration
D ) None of these

5 - When the object moves with the speed of light it's mass would be ----:

A ) Doubled
B ) Zero
C ) Remain same
D ) Infinity ✅

6 - Earth attracts object due to its ------:

A ) Gravity ✅
B ) Weight
C ) Energy
D ) Mass

7 - Which of the following is true about the gravitational force?

A ) It is stronger when objects are closer ✅
B ) It is strong when objects are farther
C ) It Is not dependent on distance.
D ) It is only effective on large objects.

8 - What happens to the acceleration of an object in free fall if the air resistance is negligible?

A ) It remain constant ✅
B ) It increase
C ) It decrease
D ) It fluctuates

9 - Gravitational force is a type of -----:

A ) Field force ✅
B ) Contact Force
C ) Electromagnetic force
D ) Nuclear force

10 - What happened to mass of an object when it travels at the speed of light?

A ) It becomes Infinite ✅
B ) It decrease
C ) It remains constant
D ) It doubles

11 - If the Earth's mass were doubled the gravitational force on an object at its surface would ----:

A ) Remain same
B ) Double ✅
C ) Become four times greater
D ) Become half

12 - What is the gravitational pull of the Moon compared to the Earth?

A ) One- sixth of Earth's gravity ✅
B ) Half of Earth's gravity
C ) Same as Earth
D ) Double Earth's gravity

13 - What happened to the force of gravity between two objects when the distance between them is halved?

A ) The force becomes one-fourth
B ) The force remain same
C ) The force doubles
D ) The force becomes quadrilateral ✅

14 - Gravitational force is responsible for ----:

A ) The weight of an object
B ) The motion of planets
C ) Both A and B ✅
D ) None of these

15 - Which of the following affects the gravitational force between two objects?

A ) Their color
B ) Their temperature
C ) Their shape
D ) Their masses and distance ✅

16 - If a ball is thrown upward the direction of gravitational force is?

A ) Upward
B ) Downward ✅
C ) In the direction of motion
D ) It varies

17 - What is relationship between gravitational force and mass?

A ) Inversely proportional
B ) Directly proportional ✅
C ) Independent
D ) None of these

18 - When a person stands on a scale at the Earth's surface they are measuring:

A ) Their mass
B ) Their weight ✅
C ) Their density
D ) None of these

19 - Which of the following is a property of gravitational force?

A ) It is strongest on the moon
B ) It act only on living things
C ) It decrease with distance ✅
D ) It only affects large objects