Question # 1

A force of 100 N makes on angle of 60^owith y axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

Dot product of vector with itself is.

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Zero

2 A

A²

A

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

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

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5

4

3

2

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

Vector has both of its components are negative lies in

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

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

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45°

60°

75°

90°

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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 magnitude of A will be

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Zero

A²

1

A

Parallel vectors of same magnitude will be

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Equal

Opposite

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 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

Usually the x-axis is taken as

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Vertical axis

Horizontal axis

+ve axis

-ve axis

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

Which is the example of vector quantity

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Torque

Speed

Density

Work

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