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9th Class Physics Chapter 4 Turning Effect of Forces English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
The angle between rectangular components of a vector is
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0°
90°
180°
270°
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Question # 2
The force with which Earth attracts the object towards its center is known as
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Force
Weight
Mass
Gravity
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Question # 3
If base of a right angle triangle is 3 cm and perpendicular is 4 cm. What is length of perpndicular?
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3 cm
2 cm
5 cm
10 cm
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Question # 4
Unit of Resultant force is:
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Nm
-2
N.m
Nm
-1
N
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Question # 5
Perpendicular / hypotenuse is equal to:
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Cos
θ
Tan
θ
Cosec
θ
Sin
θ
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Question # 6
F
x
= 4 N and F
y
=3N what is F?
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5N
1.5 N
16 N
9 N
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Question # 7
If Fy = 4 N and Fx = 3 N , what is the magnitude of resolution of force.
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5 N
7 N
10 N
15N
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Question # 8
Turning effect of a force is called:
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Torque
Moment
Couple
Torque and momentum
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Question # 9
A line about which a body rotates is called;
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Axis of rotation
Rigid Body
Center of gracity
None of these
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Question # 10
Two equal but unlike parallel forces having different lines of action produce:
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a Torque
a couple
Equilibrium
Netural equilibrium
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Question # 11
Cos 0
o
is
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0
2
1
0.5
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Question # 12
.............. is example of vector.
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Length
Force
Mass
Time
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