Question # 1

The subtraction of a vector is equivalent to the addition with

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Same direction

Perpendicular direction

Reversed direction

All of these

When a vector is multiplied by a (-)ve number its direction

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Remains constant

Reversed

Change by 90°

None of these

Vectors have

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Numerical value

Directional

Both a and b

None of these

If a vector of magnitude 10 N along y-axis then its component along x-axis is

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0 N

5 N

8.66 N

10 N

Dot product of vector with itself is.

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Zero

2 A

A²

A

The resultant of two vectors having magnitude 12 N and 8 N can not be

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2 N

20 N

10 N

16 N

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

The angle between x-axis, y-axis and z-axis is

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45°

60°

75°

90°

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

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

Force 12 N and 5 N are add, the resultant con not be

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13 N

6 N

7 N

17 N

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

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