Question # 1

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

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

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45°

60°

75°

90°

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 magnitude of A will be

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Zero

A²

1

A

Usually the x-axis is taken as

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Vertical axis

Horizontal axis

+ve axis

-ve axis

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 direction of null vector can be

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(+) ve

(-) ve

Arbitrary

Zero

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

Name the quantity which is a vector.

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Speed

Force

Temperature

Density

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

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 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 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

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

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