Multiple Choice Questions
GRAVITATION
Practice Questions with Answers
Total 103 questions available
Q. 1
What is the relationship described by the Universal Law of Gravitation?
A
F ∝ M × mB
F ∝ M + mC
F ∝ M^2D
F ∝ M / mClick an option to check your answer
Q. 2
Which statement about a satellite in orbit is wrong?
A
It is a freely falling bodyB
It is moving with constant speedC
It is acted upon by a force directed away from the center of the earthD
It is an accelerated motionClick an option to check your answer
Q. 3
If a body weighs 48 N on Earth, what is its weight on the Moon?
A
98 NB
8 NC
48 ND
9.8 NClick an option to check your answer
Q. 4
What principle explains why a ship made of iron floats while a sheet of the same material sinks?
A
Pascal’s LawB
Bernoulli’s PrincipleC
Archimedes’ PrincipleD
Newton’s Third LawClick an option to check your answer
Q. 5
Who first measured the gravitational constant (G)?
A
Galileo GalileiB
Henry CavendishC
Isaac NewtonD
Albert EinsteinClick an option to check your answer
Q. 6
How does the area affect the pressure exerted by a force?
A
Area has no effect on pressureB
Pressure decreases with areaC
Pressure increases with areaD
Pressure is equal regardless of areaClick an option to check your answer
Q. 7
Which equation represents the relationship between initial velocity, final velocity, and acceleration?
A
v=u+atB
s=ut+21at2C
v2=u2+2asD
All of the aboveClick an option to check your answer
Q. 8
How does the weight of an object on the Moon compare to its weight on Earth?
A
It is the sameB
It is greater on the MoonC
It varies randomlyD
It is less on the MoonClick an option to check your answer
Q. 9
What force keeps the moon in orbit around the Earth?
A
Centrifugal forceB
Frictional forceC
Tension forceD
Gravitational forceClick an option to check your answer
Q. 10
I weigh 60 kg on Earth. If the gravity on the Moon is one-sixth that of the Earth, then my weight on the Moon will be:
A
60 kgB
10 kgC
70 kgD
5 kgClick an option to check your answer
Q. 11
A body falls freely towards the earth with what type of acceleration?
A
Uniform speedB
Uniform velocityC
Uniform accelerationD
None of theseClick an option to check your answer
Q. 12
What is the main factor determining the magnitude of the buoyant force on an object?
A
Density of the objectB
Color of the objectC
Shape of the objectD
Volume of fluid displacedClick an option to check your answer
Q. 13
The force of gravitation between two bodies varies with r as:
A
1/r²B
1/rC
r²D
rClick an option to check your answer
Q. 14
Variation of g with distance r from the center of the Earth (r > Re) is best given by:
A
g ∝ 1/r2B
g ∝ rC
g ∝ r^2D
g ∝ 1/rClick an option to check your answer
Q. 15
Which of the following is true about mass?
A
It changes with locationB
It is a measure of inertiaC
It depends on gravityD
Both A and CClick an option to check your answer
Q. 16
The value of g near the earth's surface is?
A
8.9 m/sB
9.8 m/s²C
9.8 m/sD
8.9 m/s²Click an option to check your answer
Q. 17
The gravitational force depends on?
A
Their separationB
Gravitational constantC
Product of their massesD
All of theseClick an option to check your answer
Q. 18
A body is weighed at the poles and then at the equator. Where is it heavier?
A
At the equatorB
At the polesC
Equal at both locationsD
Depends upon the objectClick an option to check your answer
Q. 19
When an object is thrown up, the force of gravity?
A
Increases as it moves upB
Acts in the opposite directionC
Remains constantD
Acts in the direction of motionClick an option to check your answer
Q. 20
Speed of Jupiter if mass is 1.9 × 10²⁷ kg, sun mass is 1.99 × 10³⁸ kg, distance is 7.8 × 10¹¹ m?
A
1.304 × 10⁴ m/sB
13.04 × 10⁴ m/sC
1.304 × 10⁶ m/sD
1.304 × 10² m/sClick an option to check your answer
Q. 21
What is the SI unit of weight?
A
Newton (N)B
Meter (m)C
Kilogram (kg)D
Joule (J)Click an option to check your answer
Q. 22
If an object has a density greater than that of the fluid, what will happen when it is placed in the fluid?
A
It will stay suspendedB
It will evaporateC
It will floatD
It will sinkClick an option to check your answer
Q. 23
The value of ‘g’ is minimum:
A
In minesB
At equator of EarthC
At poles of EarthD
On hillsClick an option to check your answer
Q. 24
What does Archimedes’ Principle state about the buoyant force on an immersed object?
A
It is equal to the weight of the fluid displaced by the objectB
It is equal to the volume of the objectC
It is directly proportional to the density of the objectD
It is equal to the weight of the objectClick an option to check your answer
Q. 25
Which of the following is not related to gravitational law?
A
Thunder and lightningB
Motion of planets around the SunC
Occurrence of tidesD
Rainfall and snowfallClick an option to check your answer
Q. 26
What determines whether an object sinks or floats in a fluid?
A
Its volumeB
Its density compared to the fluidC
Its colorD
Its shapeClick an option to check your answer
Q. 27
The mass of a body on Earth is 60 kg; what is its mass on the Moon?
A
ZeroB
10 kgC
120 kgD
60 kgClick an option to check your answer
Q. 28
What is Archimedes' Principle primarily used for in engineering?
A
Designing ships and submarinesB
Designing buildingsC
Designing roadsD
Designing electronicsClick an option to check your answer
Q. 29
What does the equation W=m×g represent?
A
The force of an objectB
The weight of an objectC
The distance of an objectD
The mass of an objectClick an option to check your answer
Q. 30
The force of gravitation exists?
A
At the surface of the moon onlyB
Everywhere in the universeC
At the surface of the earth onlyD
Inside the earth onlyClick an option to check your answer
Q. 31
A missile launched below escape velocity has what kind of energy?
A
ZeroB
PositiveC
NegativeD
May be positive or negativeClick an option to check your answer
Q. 32
Which statement is correct?
A
All bodies repel each otherB
Earth does not behave like a magnetC
Acceleration due to gravity is 8.9 m/s²D
All bodies fall at the same rate in vacuumClick an option to check your answer
Q. 33
The tidal waves in the sea are primarily due to:
A
Atmospheric effect of EarthB
Gravitational effect of Mars on EarthC
Gravitational effect of Moon on EarthD
None of theseClick an option to check your answer
Q. 34
How does pressure in a confined fluid behave?
A
It decreases with depthB
It is transmitted in all directionsC
It acts only downwardD
It only acts on the surfaceClick an option to check your answer
Q. 35
Why does the cork float while the nail sinks?
A
Nail has more volumeB
Cork is less dense than waterC
Cork has less surface areaD
Cork is heavierClick an option to check your answer
Q. 36
Which of the following objects will sink in water?
A
A wooden blockB
A plastic bottleC
An iron nailD
A corkClick an option to check your answer
Q. 37
What is the SI unit of pressure?
A
Pascal (Pa)B
Meter (m)C
Joule (J)D
Newton (N)Click an option to check your answer
Q. 38
What upward force does a body experience when immersed in a fluid?
A
Gravitational forceB
Buoyant forceC
FrictionD
TensionClick an option to check your answer
Q. 39
In which scenario would you expect the pressure exerted by a block of wood to be greatest?
A
When the block is on a side with the largest areaB
When the block is on a side with the smallest areaC
When the block is suspended in the airD
When the block is in a container filled with waterClick an option to check your answer
Q. 40
What is the SI unit of G?
A
N²–m²/kgB
N–m²/kg²C
N–m/kgD
N–m²/kgClick an option to check your answer
Q. 41
Four planets A, B, C, and D made up of the same material have radii of r/2, r, 2r, and 4r. The order of the planets in increasing order of acceleration due to gravity is:
A
A, C, B, DB
B, C, D, AC
A, B, C, DD
D, C, B, AClick an option to check your answer
Q. 42
Why does a bottle feel lighter when submerged in water?
A
Water reduces its volumeB
Buoyant force acts upwardsC
It is filled with airD
It weighs less in waterClick an option to check your answer
Q. 43
The force of gravitation between two bodies varies with r as:
A
1/rB
rC
r²D
1/r²Click an option to check your answer
Q. 44
According to Archimedes' Principle, what does the buoyant force equal?
A
Weight of the fluidB
Weight of the bodyC
Weight of the containerD
Weight of the fluid displacedClick an option to check your answer
Q. 45
Why does the Earth not move towards a falling apple?
A
The apple's mass is too largeB
The gravitational force is negligibleC
The Earth's mass is too largeD
The apple is not fallingClick an option to check your answer
Q. 46
Why do vehicles like trucks have wider tires?
A
To increase thrustB
To improve stabilityC
To enhance speedD
To decrease pressure on the groundClick an option to check your answer
Q. 47
A geostationary satellite?
A
Moves faster than a near earth satelliteB
Is stationary in spaceC
Revolves about the polar axisD
Has a time period less than a near earth satelliteClick an option to check your answer
Q. 48
Weight of an object is highest at:
A
Center of EarthB
PolesC
EquatorD
Above the Earth’s surfaceClick an option to check your answer
Q. 49
Universal law of gravitation does not explain:
A
Motion of planets around the SunB
Tides on Earth due to the MoonC
Motion of the Moon around EarthD
Motion of electrons in an atomClick an option to check your answer
Q. 50
What happens to an object's weight if its mass is doubled?
A
It halvesB
It remains the sameC
It triplesD
It doublesClick an option to check your answer
Q. 51
An object weighs 10 N on the surface of the Earth. What should be its weight on the Moon?
A
2.20 NB
16.7 NC
1.67 ND
4.18 NClick an option to check your answer
Q. 52
What happens to an object's weight as it moves from Earth to the Moon?
A
It becomes zeroB
It decreasesC
It increasesD
It remains the sameClick an option to check your answer
Q. 53
How does the pressure exerted by a nail compare to that of a flat surface?
A
It increasesB
It fluctuatesC
It remains the sameD
It decreasesClick an option to check your answer
Q. 54
What is the mass of a body on the moon if its mass on Earth is M?
A
M + 6B
MC
M/6D
ZeroClick an option to check your answer
Q. 55
If the distance between two masses is doubled, what happens to the force?
A
1/4 timesB
2 timesC
1/2 timesD
4 timesClick an option to check your answer
Q. 56
What causes the decrease in the elongation of the string when a stone is lowered into water?
A
The density of the water decreasesB
The stone gains weight in waterC
The buoyant force acting on the stone increasesD
The water level rises, affecting the readingClick an option to check your answer
Q. 57
Acceleration due to gravity on the surface of the Moon is 1/6th of its value on the surface of the Earth because they have different:
A
MassB
DensityC
RadiusD
All of theseClick an option to check your answer
Q. 58
In which situation would an object not experience buoyancy?
A
When it is fully immersed in waterB
When it is in airC
When it is sinkingD
When it is floating on the surfaceClick an option to check your answer
Q. 59
What do we call the upward force exerted by a fluid on an immersed object?
A
Buoyant forceB
ThrustC
WeightD
PressureClick an option to check your answer
Q. 60
According to Galileo's experiments, how do objects of different masses fall?
A
Heavier objects fall fasterB
Lighter objects fall slowerC
All objects fall at the same rateD
It depends on their shapeClick an option to check your answer
Q. 61
Gravitational force does not depend on:
A
The gravitational constantB
Charge on two bodiesC
Masses of two bodiesD
Separation between two bodiesClick an option to check your answer
Q. 62
Where is the maximum weight of a body?
A
On the surface of the earthB
At the center of the earthC
Above the surface of the earthD
Inside the earthClick an option to check your answer
Q. 63
Gravitational force acting on 1 kg?
A
9.8 NB
1/9.8 NC
980 ND
None of theseClick an option to check your answer
Q. 64
If the mass of Earth is increased by 25% with no change in size, what happens to its gravitational acceleration?
A
Decreases by 25%B
Remains constantC
May decrease or remain constantD
Increases by 25%Click an option to check your answer
Q. 65
What occurs once a stone is fully immersed in water?
A
It sinks deeperB
It floatsC
It gets heavierD
No further decrease in string elongationClick an option to check your answer
Q. 66
The weight of an object:
A
Is the same as the massB
Is the quantity of matter it containsC
Is the force with which it is attracted to the EarthD
Refers to its inertiaClick an option to check your answer
Q. 67
The SI unit of G is:
A
N kg⁻²B
N mC
N m s⁻¹D
N kg⁻² m²Click an option to check your answer
Q. 68
What does 'g' represent in the context of free fall?
A
Gravitational forceB
Acceleration due to gravityC
Mass of an objectD
Weight of an objectClick an option to check your answer
Q. 69
Why does a plastic bottle float in water when it is closed and empty?
A
The plastic bottle has a high buoyant forceB
The plastic bottle displaces more water than its weightC
The plastic bottle is lighter than waterD
The plastic bottle is denser than waterClick an option to check your answer
Q. 70
What is the relationship between thrust and pressure?
A
Pressure = Thrust × AreaB
Pressure = Thrust / AreaC
Pressure = Force × AreaD
Pressure = Area / ThrustClick an option to check your answer
Q. 71
What happens to the gravitational force as the distance between two objects increases?
A
It becomes zeroB
It decreasesC
It increasesD
It remains constantClick an option to check your answer
Q. 72
A ball thrown vertically upwards with a velocity ‘u’ will fall back with what velocity?
A
Greater than ‘u’B
Equal to ‘u’C
Greater than or equal to ‘u’D
Less than ‘u’Click an option to check your answer
Q. 73
Acceleration due to gravity?
A
Is greater on the moonB
Varies with latitudeC
Has the same value everywhere in spaceD
Has the same value everywhere on the EarthClick an option to check your answer
Q. 74
What principle explains why objects feel lighter in water?
A
Pascal's LawB
Newton's LawsC
Archimedes' PrincipleD
Bernoulli's PrincipleClick an option to check your answer
Q. 75
How does the weight of an object change with location?
A
It increases everywhereB
It decreases on the moonC
It depends on mass onlyD
It remains constantClick an option to check your answer
Q. 76
What is the primary reason for using wide foundations in buildings?
A
To reduce the weight of the buildingB
To increase the pressure exerted on the groundC
To distribute the weight of the building over a larger areaD
To make the building aesthetically pleasingClick an option to check your answer
Q. 77
Which instrument uses Archimedes' Principle to determine the density of liquids?
A
HydrometerB
BarometerC
LactometerD
ThermometerClick an option to check your answer
Q. 78
What is the effect of buoyancy on an object submerged in a fluid?
A
It has no effectB
It pulls the object downC
It pushes the object upD
It changes its massClick an option to check your answer
Q. 79
1 kg weight is equal to?
A
9.8 NB
980 NC
98 ND
None of theseClick an option to check your answer
Q. 80
The acceleration due to gravity at the poles is:
A
ZeroB
Less than at the equatorC
Same as at the equatorD
More than at the equatorClick an option to check your answer
Q. 81
What happens to the elongation of a string when a stone is lowered into water?
A
It fluctuatesB
It increasesC
It remains the sameD
It decreasesClick an option to check your answer
Q. 82
What is the acceleration due to gravity denoted by?
A
aB
gC
mD
FClick an option to check your answer
Q. 83
If a rock is brought from the surface of the moon, what will change?
A
Its mass will changeB
Its weight will changeC
Both mass and weight will changeD
Its mass and weight remain the sameClick an option to check your answer
Q. 84
What is the SI unit of the gravitational constant (G)?
A
J/kgB
kg m/s²C
N m²/kg²D
N/kgClick an option to check your answer
Q. 85
What does Pascal’s Law state about the pressure in confined fluids?
A
Pressure is not transmitted through fluidsB
Pressure varies according to the density of the fluidC
Pressure is transmitted undiminished in all directionsD
Pressure is reduced by the fluid’s temperatureClick an option to check your answer
Q. 86
The value of G does not depend on?
A
Nature of the bodiesB
Size of the bodiesC
Mass of the bodiesD
All of theseClick an option to check your answer
Q. 87
What happens to the buoyant force when the density of the fluid increases?
A
It becomes zeroB
It increasesC
It decreasesD
It remains the sameClick an option to check your answer
Q. 88
Which situation demonstrates the concept of thrust?
A
Lifting a book off a tableB
Pressing a thumbtack into a bulletin boardC
Throwing a ballD
Standing on solid groundClick an option to check your answer
Q. 89
Why does the Earth not move towards an apple when it falls?
A
Apple experiences greater forceB
Only apple exerts force on EarthC
Only Earth exerts force on appleD
Acceleration of Earth is negligibleClick an option to check your answer
Q. 90
What is the SI unit of g?
A
m/s²B
m/sC
s/m²D
m²/sClick an option to check your answer
Q. 91
The magnitude of gravitational force between the Earth and a 10 kg body is:
A
90 NB
100 NC
9.8 ND
98 NClick an option to check your answer
Q. 92
In a vacuum, what would happen if a feather and a hammer are dropped simultaneously?
A
The hammer falls fasterB
The feather falls slowerC
They fall at the same rateD
They do not fallClick an option to check your answer
Q. 93
Why does an iron nail sink in water while a cork floats, despite both having the same mass?
A
The nail has a greater volume of displaced water compared to the corkB
The cork has a higher density than the nailC
The nail displaces more water than the corkD
The density of the nail is greater than that of the waterClick an option to check your answer
Q. 94
SI unit of weight?
A
kg wtB
NC
g wtD
None of theseClick an option to check your answer
Q. 95
What is thrust in the context of forces?
A
Any upward forceB
Force acting perpendicular to a surfaceC
Force exerted by gravityD
Force acting in any directionClick an option to check your answer
Q. 96
Why does a block of wood exert different pressures on a table depending on its orientation?
A
The density of the wood changesB
The gravitational pull variesC
The area of contact changesD
The weight of the block changesClick an option to check your answer
Q. 97
When a body is fully immersed in a fluid, what happens to the buoyant force acting on it?
A
It decreasesB
It increasesC
It becomes zeroD
It remains the sameClick an option to check your answer
Q. 98
What is the primary reason a ship made of steel can float?
A
It weighs less than waterB
Its density is less than waterC
It has a large surface areaD
It is filled with airClick an option to check your answer
Q. 99
What is weight?
A
Is a vector quantityB
Of a body in space is maximumC
Increases when bodies go upD
None of theseClick an option to check your answer
Q. 100
Density of oil with mass 11040 kg and volume 12 m³?
A
920 kg/m³B
92 kg/m³C
9.2 kg/m³D
1.08 × 10⁻³ kg/m³Click an option to check your answer
Q. 101
The wrong option about gravitational force among the following is:
A
Always attractive by natureB
Gravitational force acts on the line joining the massesC
Does not form action-reaction pairD
Independent of the other massesClick an option to check your answer
Q. 102
According to Newton, what does the falling apple illustrate about gravitational force?
A
It only affects large objectsB
It is negligible for small objectsC
It attracts all objects equallyD
It depends on distanceClick an option to check your answer
Q. 103
What is the mass of a body whose weight is 59 N? Take g = 9.8 m/s²
A
50 kgB
5 kgC
6 kgD
9 kgClick an option to check your answer
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