MCQ Question Quiz For Class 9 Science (Physics) Chapter - 2 Force and laws of motion. CBSE NCERT Special For Exam Ncert class 9 Motion in english solutions.Class 9 force and law of Motion MCQ question quiz
Part 1.
Video Solution
First law of motion defines-
(A) inertia
(B) force
(C) both inertia and force
(D) neither inertia nor force
Newton's first law of motion is -
(A) qualitative
(B) quantitative
(C) both qualitative and quantitative
(D) neither qualitative nor quantitative
Inertia depends upon -
(A) acceleration of the body
(B) velocity of the body
(C) shape of the body
(D) mass of the body
Which of the following has largest inertia?
(A) A pin
(B) An ink pot
(C) Your physics book
(D) Your body
When a bus starts suddenly the passengers standing on it, lean backwards in the bus. This is an example of -
(A) Newton's first law
(B) Newton's second law
(C) Newton's third law
(D) none of Newton's law
What is the SI unit of momentum?
(A) m/s
(B) Kg m/s
(C) m/s²
(D) None
Name the scientist who gave the laws of motion.
(A) Sir Issac Newton
(B) Elbert Einstein
(C) Alexander Fleming
(D) None of them
When we talk of force acting on a body, it usually means:
(A) Electrical force
(B) Balanced force
(C) Unbalanced force
(D) Nuclear force
A passenger in a moving train tosses a coin which falls behind him. This shows that the motion of train is:
(A) Accelerated
(B) Uniform
(C) Retarded
(D) along circular track
The mass of an object is measured by using
(a) spring balance
(b) litre-jug
(c) weighing machine
(d) physical balance
The product of mass of the object and its velocity is
(a) force
(b) acceleration
(c) weight
(d) momentum
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Part 2 .
Video Solution
Rocket works on the principle of conservation of:
(a) mass
(b) energy
(c) momentum
(d) velocity
Among the equal-sized stone and a football, the inertia will be higher of:
(a) football
(b) stone
(c) both
(d) none of them
Friction is:
(a) useful to us
(b) harmful to us
(c) both useful as well as harmful to us
(d) none of them.
Which of the following is the unit of force?
(A) Pascal
(B) Newton
(C) Second
(D) None of them
The physical quantity dependent on direction is
(a) weight
(b) mass
(c) volume
(d) density
The C.G.S. unit of mass is
(a) gram force
(b) gram
(c) kilogram
(d) Newton
The velocity time graph for a constant
velocity is:
(a) Straight line
(b) Curved line
(c) Circular line
(d) All the above
The distance -time graph for uniform motion is a:
(a) Straight line
(b) Curved line
(c) Circular line
(d) All the above
Which one of the following is called first
equation of motion?
(a)
v = u + at
(b)
s = ut + 1/2 at²
(c) v ² = u² + 2as
(d) All the above
A cyclist does not come to rest immediately after he stops pedalling due to:
(a) Buoyant force
(b) Inertia of motion
(c) Drag force
(d) All the above
Which one of the following formula describes
the impulse?
(a) Mass
× Acceleration
(b) Force
× time
(c) Force/Area
(d) None of them
Upward force exerted by the fluid on the
partially immersed solid in that fluid is called:
(a) Pressure
(b) Buoyant force
(c) Acceleration
(d) Momentum
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