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Who gave the concept of gravitational force
A) Albert Einstein
B) Sir Isaac Newton
C) Henry keyendies
D) Gellileo
Ans a
The value of quantity G in the formula for gravitational force:
A) Depends on mass of the earth only
B) Depends on the radius of earth only
C) Depends on both mass and radius of earth
D) Depends neither on mass nor on radius of earth
Ans c
What is the value of gravitational constant G
A) 6.67 * 10-¹¹ N m²/Kg
B) 6.67 * 10¹¹ N m²/Kg
C) 9.8 m/s²
D) None of them
Ans a
What is the SI unit of gravitational constant (G)
A) Pascal
B) N m²/kg²
C) Newton
D) M/s²
Ans b
The S.I. unit of acceleration due to gravity is
A) m/s
B) m/s²
C) kg/m³
D) Pascal
Ans b
Newton's law of gravitation is applicable to
(a) objects in solar system
(b) planets and stars only
(c) objects on earth only
(d) all bodies in the univers
Ans d
The law of gravitation gives the gravitational force between:
A) The earth and a point mass only
B) The earth and the sun only
C) Any two bodies having some mass
D) Any two charged bodies only
Ans c
Which force is responsible for the moon revolving round the earth?
A) gravitation acceleration
B) centripetal force
C) mascular force
D) magnetic force
Ans b
What type of motion the moon would go on, if gravitational force is removed ?
A) Uniform Curve line
B) Uniform Circular line
C) Uniform Straight line
D) None of the above
Ans c
The gravitation is inversely related to
A) distance between masses
B) product of magnitude of masses
C) direction of masses
D) square of distance between masses
Ans d
What force is responsible for the earth revolving round the sun?
A) Gravitation force
B) Magnetic force
C) Force due to gravity
D) None of them
Ans a
The value of (g) on the surface of the moon:
A) Is the same as on the Earth
B) Is less than that on the Earth
C) Is more than that on the Earth
D) Keeps changing day by day
Ans b
The atmosphere consisting of a large number of gases is held to the earth by:
A) Winds
B) Clouds
C) Earth’s magnetic
D) Gravity
Ans d
The weight of an object at the centre of the earth of radius R is:
A) Zero
B) R times the weight at the surface of the earth.
C) Infinite
D) 1/R
²
times the weight at the surface of the earth
Ans a
The weight of body is due to force of gravitation between body and
A) earth
B) other bodies
C) atmosphere
D) water
Ans a
Who was the first to realize that the moon is a satellite
A) Galileo Galilei
B) Albert Einstein
C) C V Raman
D) Abdul Kalam
Ans a
Objects fall towards the earth
only under gravitational force of earth, we say the
objects are in the state of
A) Uniform acceleration
B) Free fall
C) Acceleration due to gravity
D) None of them
Ans b
It is the force with which the body is attracted towards the centre of the earth.
A) Mass
B) Weight
C) Density
D) Relative density
Ans b
The perpendicular force applied on the surface is called
A) Pressure
B) Thrust
C) buoyancy
D) None of them
Ans b
Mass per unit area also is known as
A) Force
B) Pressure
C) Thrust
D) All of them
Ans b
Which of the following is the SI unit of mass is?
A) m/s
B) kg
C) Newton
D) Pascal
Ans b
What is the SI unit of weight is?
A) m/s²
B) kg
C) Newton
D) Pascal
Ans c
Mass of a body can be measured with the help of
A) Spring balance
B) Common balance
C) Analytical balance
C) None of them
Ans b
Weight of a body can be measured with the help of
A) Spring balance
B) Common balance
C) Analytical balance
C) None of them
Ans a
Choose the correct unit for the relative density among the following:
(a) kg/cm
(b) unitless
(c) kg/cm
(d) kg/m3
Answer: (b) unitless
Your queries : gravitation | gravitational force | acceleration due to gravity | Newton's universal law of gravitation | gravitational constant | free fall | falling of Apple | density | relative density | mass | weight
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