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Online Tests
Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers
Question # 1
If Fx and Fy are rectangular components of vector F, then its direction is determined by the relation
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θ = sin-1 Fv/Fx
θ = tan-1 Fx/Fy
θ = tan Fx/Fy
θ = tan Fy/Fx
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Question # 2
The resultant vector of given vectors A and B is
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Question # 3
States of equilibrium are:
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2
3
4
5
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Question # 4
The turning effect of force is called:
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Torque
Parallel force
Equilibrium
Couple
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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
ΣF=0 is __________ condition of equilibrium:
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1st
2nd
Unstable
Stable
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Question # 7
A couple consists of which type of forces :
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Like parallel
Unlike parallel
Not parallel
Nil
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Question # 8
Complete equation fy/fx =
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Sin𝜽
Cos 𝜽
Tan𝜽
Cos ec𝜽
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Question # 9
_____________ is centre from which its mass is equally distributed:
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Cebtre of mass
Centre of gravity
All of above
None
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Question # 10
Clockwise torque is taken:
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Positive
Negative
Neutral
Nil
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Question # 11
After tilting if body come back to its original position then the body is in:
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Stable equilibrium
unstable equilibrium
Neutral equilibrium
Equilibrium
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Question # 12
Centre of gravity of sphere is at:
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Centre of sphere
Outside of sphere
Radius of sphere
None of these
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Question # 13
Unit of moment arm (L) is:
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Meter
Mole
Newton
Nm
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