Gravitation (Test -2) - Class 9 Science, 21-02-2018 - Class 9 MCQ

The value of ‘g’ at the mount Everest is

Statement A: When an object is thrown up then its speed at any position while going up is same as the speed while coming down. 
Statement B: A can’t have zero weight
Which of the two statements is true?

Match the following with correct response. 
(1) Acceleration due to gravity depends
(2) Gravitational constant 
(3) Free fall of the object 
(4) One kg wt.

(A) 9.8N 
(B) 6.6734×10⁻¹¹Nm²/Kg²
(C) Latitude of the place 
(D) Influence of earth’s gravitational pull

Newton’s law of gravitation is valid in

A ball thrown up vertically returns to the ground after 10 second. Find the velocity with which it was thrown up? (g=10m/s²)

Calculate the mass of the Earth. given radius of the Earth is6.4×106m6.4×10⁶m.

Match the following with correct response. 
(1) Archimedes principle 
(2) Weight of object on moon 
(3) Strap of school bag made wider 
(4) Buoyant force 

(A) One sixth of weight of an object on earth 
(B) Upward force 
(C) To Reduce pressure on shoulder 
(D) Used in designing ships & submarines

How does the force of gravitation between two objects change when the distance between them is reduced to half?

As we move above the surface of the Earth, the value of g

If the weight of Harsh is 150N. What is his mass? (g =10m/s²)

Match the following with correct response. 
(1) Universal law of gravitation 
(2) Gravitation force between the earth and an object 
(3) Thrust per unit area 
(4) Mass per unit volume 

(A) Motion of moon around the earth 
(B) Pressure 
(C) Weight 
(D) density

Which of the following statement are incorrect-
A Value of acceleration due to gravity is same at all places
B Mass is constant at all places
C Weight is constant at all places 
D Weight of an object can be zero. 

Drop an iron nail and a sheet of paper from the roof of your house. Which of the two will reach the ground first?

Statement A: A person will weigh more in Ooty than in Delhi, 
Statement B: mass is measured by pan balance and weight is measured by spring balance. 
Which of the two statements is true?

Match the following with correct response. 
(1) Value of G 
(2) Object floats over water 
(3) S.I unit of pressure 
(4) S.I unit of weight 

(A) Newton 
(B) Density is less than water 
(C) Always constant 
(D) Pasca

What happens to the force between two objects if the masses of both objects are doubled?

Find the in correct statement ?

Statement A: Mass of a body is a fundamental property
Statement B: Weight is a fundamental property. 
Which of the two statements is true?

Match the following with correct response. 
(1) Thrust 
(2) Ge 
(3) gm 
(4) Motion of planets in fixed orbit 

(A) 1.63 m/s²
(B) Force perpendicular to the surface 
(C) Gravitational attraction of sun 
(D) 9.8 m/s²

The distance between two particles is decreased. The gravitational force between them

Which of the following statement is incorrect?

A body has a weight W on the surface of Earth. What is its weight on a planet which has mass 10 times that of the Earth and a radius of 4 times that of the earth?

Match the following with correct response. 
(1) Density 
(2) Relative density 
(3) Acceleration due to gravity 
(4) Gravitational contrast 

(A) No unit 
(B) Nm²/Kg²
(C) m/s²
(D) Kg/m³

If Ge is the value of universal gravitational constant at the Earth and Gm is the value of universal gravitational constant on the moon then

“When an apple is thrown up earth attract the apple but the apple does not attract the earth” The above written statement is

If a block of mass weighed 1N at equator, What would be its weight at poles?

Match the following with correct response. 
(1) Mass is measured by 
(2) Weight is measured by 
(3) Purity of milk 
(4) Density of liquid 

(A) Beam balance 
(B) Lactometer 
(C) Spring balance 
(D) Hydrometer