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PPSC Physics Chapter 1 MECHANICS MCQs With Answers

Question # 1

Which are the two basic properties of a vector.

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Curvature and direction

Magnitude and direction

Magnitude and sign

Curvature and sign

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Question # 2

A body of mass 3 kg lies on the surface of the table 2 m high it is moved on the surface 4 m the change in P.E. will be.

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9.8 J

6 J

Zero

329 J

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Question # 3

If gravitational field is not uniform over the extended object or system of point masses the centre of mass and centreof gravity will

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Be antiparallel

Not coincide

Coincide

Be perpendicular

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Question # 4

Which of the following will not acceleation.

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The moon in its orbit

A tennis ball rebounding from ground

A store in free fall

A car in which the engine thrust is equal to the friction

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Question # 5

Which pair of the following forces has a resultant force of 2 N.

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1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

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Question # 6

Oscillatory motion is always under

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An applied force

Restoring force and inertia

A periodic force

A gravitational force

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Question # 7

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

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Question # 8

Simple harmonic motion may be assumed as a projection of uniform circular motion along a

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Diagonal

Hypotenuse

Radius

Diameter

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Question # 9

A 100 kg box is pulled 10 m across a frictionless horizontal surface by a 50 N force The change in the P.E. of the box a

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0 J

2 J

20 J

50 J

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