Question # 1

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

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

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

What would encourage trade between two countries

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Different tax system

Frontier checks

National currencies

reduced tariffs

Usually the x-axis is taken as

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Vertical axis

Horizontal axis

+ve axis

-ve axis

The subtraction of a vector is equivalent to the addition with

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Same direction

Perpendicular direction

Reversed direction

All of these

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

Vectors have

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Numerical value

Directional

Both a and b

None of these

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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

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

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

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

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

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45°

60°

75°

90°

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

Dot product of vector with itself is.

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Zero

2 A

A²

A

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