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Online Tests
Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers
Question # 1
The centre of gravity of hollow cylinder is the middle point on its:
Choose an answer
Curved side
axis
Bottom
On upper side
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Question # 2
Forces on doubled arm spanner are called.
Choose an answer
Torque
Couple
Moment of force
Momentum arm
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Question # 3
The centre of gravity of uniform triangle is:
Choose an answer
Point of intersection of medians
On its vertex
On middle point of its axis
Point of intersection of diagonal
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Question # 4
ΣF=0 is __________ condition of equilibrium:
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1st
2nd
Unstable
Stable
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Question # 5
To find x component of force 'F' we use formul:
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F Sin 𝜽
F Cos 𝜽
F tan 𝜽
F/F1
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Question # 6
A body is in equilibrium when its:
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Acceleration in uniform
speed in uniform
Speed and Acceleration are uniform
Acceleration is Zero.
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Question # 7
A body is in neutral equilibrium when its centre of gravity:
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Is at its highest position
Is at the lowest position
Keep its height if displaced
Is situated at its bottom
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Question # 8
The measure of an object tendency to rotate about same axis is :
Choose an answer
Force
Moment arm
Torque
None of these
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Question # 9
A force of 10 N is making an angle of 30o with the horizontal. Its horizontal component will be
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4N
5N
7N
8.7N
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Question # 10
Turning effect of a force is called:
Choose an answer
Torque
Moment
Couple
Torque and momentum
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Question # 11
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 # 12
Perpendicular / hypotenuse is equal to:
Choose an answer
Cos
θ
Tan
θ
Cosec
θ
Sin
θ
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