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Online Tests
Physics 9th Class English Medium Unit 3 Online Test MCQs With Answers
Question # 1
If the force of 25 N is acting along the string to balance the weight then tension in string is
Choose an answer
25 N
50 N
Zero
None
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Question # 2
All forces are example of contract forces except:
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Air resistance
Tensional
Push force
Gravitational
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Question # 3
Sliding friction can be converted into rolling friction by using
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Levers
Wedges
Ball bearings
Pulleys
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Question # 4
2nd law of motion is stated as:
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F=m/a
F=ma
F=a/m
F=ma
2
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Question # 5
Rate of change of momentum is equal to:
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Mass
Torque
Weight
Force
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Question # 6
Sliding friction can be changed into rolling friction by using:
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Ball bearing
Roller bearing
Both a and b
None of these
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Question # 7
The product of mass and velocity is called ................. .
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Momentum
Force
Acceleration `
Nil
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Question # 8
Outer edge of the curved road is elevated to prevent
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Circular motion
Centripetal force
Skidding
Protection
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Question # 9
Rolling friction is___________ then sliding friction :
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Greter
Less
Some
Half
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Question # 10
Action and Reaction are always on:
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Same body
Different bodies
Any body
None of these
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Question # 11
The weight of body is 147 N, Its mass will be ________ when g = 10 ms
-2
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1.47 kg
14.7 kg
47 kg
1.51 kg
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Question # 12
If the velocity of moving body in circle is doubled, then its centripetal force is
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Double
Half
Four times
Remain
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Question # 13
Which of the following is the unit of momentum?
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Nm
Kg ms
-2
Ns
Ns
-1
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