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Physics 9th Class English Medium Unit 4 Online Test MCQs With Answers

Question # 1

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 # 2

The angle between rectangular components of a vector is

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0°

90°

180°

270°

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Question # 3

A force of 200 N is making an angle of 30°. What is horizontal component?

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173.2 N

100 N

600 N

None of these

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Question # 4

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 # 5

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 # 6

When 10 N along positive x-axis and 7 N along negative x-axis are added by head to tail rule. The resultant force is:

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17 N

10 N

3 N

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Question # 7

Complete equation fy/fx =

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Sin𝜽

Cos 𝜽

Tan𝜽

Cos ec𝜽

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Question # 8

The condition of equilibrium are:

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Question # 9

The centre of gravity of uniform triangle is:

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Point of intersection of medians

On its vertex

On middle point of its axis

Point of intersection of diagonal

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Question # 10

A body is in neutral equilibrium when its centre of gravity:

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Is at its highest position

Is at the lowest position

Keep its height if displaced

Is situated at its bottom

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Question # 11

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 # 12

States of equilibrium are:

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