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9th Class Physics Chapter 4 Turning Effect of Forces English Medium KPK Boards Online Mcqs MCQs With Answers

Question # 1

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 # 2

The forces that are parallel to each other and have the same direction are called:

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Like parallel forces

Unlike parallel forces

Resultant forces

Net forces

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Question # 3

The product of force and momentum arm is called:

Choose an answer

Couple arm

Torque

Rigid body

Axis of rotation

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Question # 4

In a right angle triangle base is 4 cm and perpendicular is 3 cm length of diagonal will be:

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2 cm

5 cm

4 cm

6 cm

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Question # 5

It is useful to know the location of center of gravity of a body in problem dealing with

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Motion

Equilibrium

Charge

Velocity

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Question # 6

The value of sin θ at an angle of 60o is

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0.5

0.707

0.866

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Question # 7

Cos 0^ois

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0.5

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Question # 8

At what angle sin𝜽 and cos𝜽 has same values:

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30^o

45^o

60^o

90^o

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Question # 9

_____________ is related to earth attractive force.

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Centre of gravity

Acceleration

Velocity

Nil

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Question # 10

When center of gravity is at the highest position body will be in:

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Neutral equilibrium

Stable equilibrium

Unstable equilibrium

None of these

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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

Anticlockwise torque is taken:

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Negative

Neutral

Positive

Nil

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Question # 13

Torque is a ___________ quantity.

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Vector

Scalar

Base

All of these

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