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Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers
Question # 1
F
x
= 4 N and F
y
=3N what is F?
Choose an answer
5N
1.5 N
16 N
9 N
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Question # 2
A force of 10 N is making and angle of 30
o
with the horizontal. Its horizontal component will bw:
Choose an answer
4 N
5 N
7 N
8.7 N
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Question # 3
The unit of torque is:
Choose an answer
Nm
-2
Ncm
Nm
-1
Nm
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Question # 4
If base of a right angle triangle is 3 cm and perpendicular is 2 cm. What is tan
θ
Choose an answer
0.7
1.5
2
3
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Question # 5
Anticlockwise torque is taken:
Choose an answer
Negative
Neutral
Positive
Nil
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Question # 6
A body is in equilibrium when its:
Choose an answer
Acceleration in uniform
speed in uniform
Speed and Acceleration are uniform
Acceleration is Zero.
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Question # 7
Tan 90
°=
Choose an answer
Infinity
1
0
0.866
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Question # 8
Centre of gravity of sphere is at:
Choose an answer
Centre of sphere
Outside of sphere
Radius of sphere
None of these
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Question # 9
The parallel forces which have same direction are called.
Choose an answer
Resutant force
Like parallel force
Unlike force
Null force
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Question # 10
The net torque acting on a rotating body with uniform speed is:
Choose an answer
0
1
2
5
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Question # 11
A body is said to be in __________ equilibrium if after a slight tilt return to its previous position:
Choose an answer
Stable
Unstable
Neutral
None
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Question # 12
Sin 45
o
is
Choose an answer
0.707
0.5
1
0.2
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Question # 13
Centre of gravity of uniform square is:
Choose an answer
Intersection of diagonals
Point of intersection of medians
At centre
None of these
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