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

Question # 1

Base / Hypotenuse is called:

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Sin𝜽

Cos 𝜽

Tan 𝜽

Cot 𝜽

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Question # 2

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

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Question # 3

The force with which Earth attracts the object towards its center is known as

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Force

Weight

Mass

Gravity

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Question # 4

If Fy = 4 N and Fx = 3 N , what is the magnitude of resolution of force.

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5 N

7 N

10 N

15N

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Question # 5

The method used for addition of non-parallel forces is.

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Algebraic

Head to trail rule

Mathematical

Nil

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Question # 6

__________ forces have opposite direction:

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Unlike parallel

Parallel

Like parallel

None of these

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Question # 7

The centre of gravity of irregular shaped body can be found with the help of:

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Wedge

Meter rod

Plumb line

Screw gauge

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Question # 8

Perpendicular / Hypotenuse is called :

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Cos 𝜽

Sin 𝜽

Tan 𝜽

Tan^-1 𝜽

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Question # 9

The number of forces that can be added by head to tail rule are

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Any Number

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Question # 10

The net torque acting on a rotating body with uniform speed is:

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Question # 11

The vector which has the same effect as the combined effect of vectors:

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Negative vector

The vector

Resultant vector

Zero vector

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Question # 12

When equal opposite forces are added then the resultant force is ______________

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Double

Triple

Zero

None of these

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Question # 13

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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