Question # 1

Two vector can be added by simple arithmetical method when they are at an angle of.

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120^o

90^o

0^o

45^o

The subtraction of a vector is equivalent to the addition with

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Same direction

Perpendicular direction

Reversed direction

All of these

A vector is denoted by

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Light face

Bold face

Both a and b

None of these

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

Parallel vectors of same magnitude will be

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Equal

Opposite

Both a and b

None of these

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

The sum of two or more vectors will be a single vector called

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Component vector

Position vector

-ve vector

Resultant vector

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

Which is the example of vector quantity

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Torque

Speed

Density

Work

The magnitude of A will be

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Zero

A²

1

A

The resultant of two vectors having magnitude 10 N and 8 N Can not be

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2 N

9 N

18 N

20 N

Vector has both of its components are negative lies in

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

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

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

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45°

60°

75°

90°

The direction of null vector can be

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(+) ve

(-) ve

Arbitrary

Zero

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

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

Vectors have

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Numerical value

Directional

Both a and b

None of these

The resultant of two forces 30 N and 40 N acting parallel to each other is.

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30 N

40 N

70 N

10 N

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