Question # 1

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

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

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

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5

4

3

2

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

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

Vector has both of its components are negative lies in

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

A vector is denoted by

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Light face

Bold face

Both a and b

None of these

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

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7 N

5 N

4 N

1 N

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

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Remains constant

Reversed

Change by 90°

None of these

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

Parallel vectors of same magnitude will be

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Equal

Opposite

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

Direction of a vector in space requires

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Two axis

Three axis

Four axis

Both a and b

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

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

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

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