Newton's Laws of Motion and Forces - न्यूटन के गति के नियम एवं बल
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15 mins
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10
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Newton's Laws of Motion and Forces - न्यूटन के गति के नियम एवं बल — Questions with Answers
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Q1.
In which year and in which famous book did Sir Isaac Newton propound his three laws of motion?
1687, Principia
1685, Opticks
1690, Principia
1689, Mathematical Principles
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Answer: A. 1687, Principia
Sir Isaac Newton propounded his three laws of motion in 1687 in his famous book 'Philosophiae Naturalis Principia Mathematica' commonly known as Principia.
Q2.
What is the foundation of Classical Mechanics according to Newton's work?
Newton's three laws of motion
Theory of relativity
Quantum mechanics
Electromagnetic theory
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Answer: A. Newton's three laws of motion
Newton's three laws of motion form the foundation of Classical Mechanics as they establish clear, quantitative relationships between external forces and motion changes.
Q3.
Newton's first law of motion is also known as:
Law of Inertia
Law of Acceleration
Law of Action-Reaction
Law of Momentum
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Answer: A. Law of Inertia
Newton's first law of motion is also called the Law of Inertia because it describes the tendency of objects to maintain their state of rest or uniform motion.
Q4.
According to Newton's first law, a body at rest will:
Remain at rest unless acted upon by an external force
Start moving automatically
Always accelerate
Change direction continuously
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Answer: A. Remain at rest unless acted upon by an external force
Newton's first law states that a body at rest will remain at rest unless acted upon by an external unbalanced force.
Q5.
Newton's second law of motion relates force to:
Mass and acceleration
Velocity and time
Displacement and time
Energy and power
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Answer: A. Mass and acceleration
Newton's second law states that force is directly proportional to the product of mass and acceleration (F = ma).
Q6.
The mathematical expression for Newton's second law is:
F = ma
F = mv
F = m/a
F = a/m
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Answer: A. F = ma
The mathematical expression for Newton's second law is F = ma, where F is force, m is mass, and a is acceleration.
Q7.
Newton's third law states that:
For every action, there is an equal and opposite reaction
Force equals mass times acceleration
Objects remain at rest unless acted upon
Energy is conserved in all interactions
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Answer: A. For every action, there is an equal and opposite reaction
Newton's third law states that for every action, there is an equal and opposite reaction, and these forces act on different bodies.
Q8.
The SI unit of force is:
Newton (N)
Joule (J)
Watt (W)
Pascal (Pa)
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Answer: A. Newton (N)
The SI unit of force is Newton (N), named after Sir Isaac Newton. 1 Newton = 1 kg⋅m/s².
Q9.
Which of the following is an example of Newton's third law?
Walking on the ground
A ball rolling down a slope
A car accelerating
An object falling freely
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Answer: A. Walking on the ground
Walking is an example of Newton's third law - we push the ground backward with our feet, and the ground pushes us forward with equal force.
Q10.
Inertia depends on:
Mass of the object
Velocity of the object
Temperature of the object
Shape of the object
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Answer: A. Mass of the object
Inertia depends on the mass of the object. Greater the mass, greater is the inertia, making it harder to change the object's state of motion.
