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PPSC Physics Chapter 1 MECHANICS MCQs With Answers
Question # 1
If the roads are not banked
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A vehicle will turn over
A vehicle will not travel along with curve
Tyres and bearing are damaged
Roads will be spoiled
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Question # 2
The moment of linear momentum is equal to
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Implies
Torque
Angular momentum
Couple
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Question # 3
Which are the two basic properties of a vector.
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Curvature and direction
Magnitude and direction
Magnitude and sign
Curvature and sign
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Question # 4
Newton's first law of motion provides the definition of.
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Distance
Force
Vector
Acceleration
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Question # 5
Angular simple harmonic motion is.
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Periodic rectilinear motion
Independent of any applied torque
Periodic rotational motion
Never defined
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Question # 6
In rotational motion, the analogue of force is.
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moment of inertia
Moment of force
Torque
Rotational inertia
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Question # 7
Which of the following physical quantity has different units as compared to others.
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Weight of a body
Tension of a string
Buoyant force
Electromotive force
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Question # 8
If a force of 50 N is acting along x axis , then its component along y-axis will be.
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Zero
The same
Of the half magnitude
Of the double magnitude
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Question # 9
Which of the following is renewable source of energy.
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Oil
Natural gas
Uranium
Sunlight
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Question # 10
The resultant of two force 3 N and 4 N making an angle 90
o
with each other is.
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1 N
3 N
5 N
10 N
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Question # 11
The point of which an applied force produces a linear acceleration but no rotation is called.
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Centre of the body
Centre of the mass
Centre of gravity
Weight of the body
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Question # 12
A body of mass 2 kg is suspended in a elevator by means of a spring The balance reads its weight when the elevator moves up with an acceleration of 5 m s-2 as.
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9.8 N
29. 6 N
26.5 N
30.5 N
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Question # 13
An example of forced oscillation is
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the pendulum of a clock
The wind screen wiper
A plucked sonometer wire
A sonometer wire excited by a tuning fork
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Question # 14
If a force of 10 N makes an angle of 30
o
with x-axis its component is given by
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1.866 N
8.66 N
0.89 N
0.866 N
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Question # 15
Which of the following is the magnitude of the gravitational force and is not the inherent property of the body.
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Mass
Weight
Speed
Length
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Question # 16
Which of the following quantities has three significant figures.
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3.0066 m
5.05 x 10
-27
kg
301.0 s
1.009 m
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Question # 17
A body in equilibrium may not have
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Velocity
Momentum
Acceleration
K.E
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Question # 18
For the angular momentum of a system to remains constant, the external torque should be
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small
Large
Neither small nor large
zero
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Question # 19
A force passing through the centre of gravity of a body
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Causes its translational motion
Causes its rotational motion
Holds the body in equilibrium
Produces both translational and rotational motion.
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Question # 20
The weight of a man in an elevator moving down with an accelerating of 9.8 m s-2 will be come
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Half
Zero
9.8 N
Double
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Question # 21
Which quantity has dimensions different from the others.
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Energy per unit volume
Force per unit area
Angular momentum per unit mass
Pressure
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