Question # 1

A force of 10N makes an angle 30o with y axis. Then magnitude of x -component is.

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5 N

8.66 N

10 N

Zero

A direction of torque is

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Along the position vector r

Perpendicular to both r and f

Along the direction of force F

Opposite to the direction of r

Dot product of vector with itself is.

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Zero

2 A

A²

A

The resultant of two forces 3N and 4 N acting at right angle to each other is.

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5 N

6 N

1 N

7 N

The dot product of two vectors A and B will be zero, if angle between A and B is

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Zero

30^o

90^o

180^o

Usually the x-axis is taken as

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Vertical axis

Horizontal axis

+ve axis

-ve axis

Dot product of two non zero vectors is zero it angle between them is.

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30^o

60^o

45^o

90^o

The magnitude of A will be

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Zero

A²

1

A

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

If r = 5 m and f = 4 N are along same direction, them torque is

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20 Nm

5 Nm

10 Nm

Zero

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Physics English Medium Fsc Part 1 Chapter 2 Online MCQs Test MCQs With Answers

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