Question # 1

The driection of vector si space is specified by:

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One angle

Two angles

Three angles

None of above

Two vectors having different magnitudes:

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Have their directions opposite

May have their resultant zero

Cannot have their resultant zero

None of these

Scalar product is also called:

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Cross product

Dot product

Product scalar

Product vector

If a vector lies in second quadrant, than B_xand B_yare:

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-,+

+,-

+,+

-,-

A person starts his journey from a point 0, travels 4 Km SW, then 4 Km NW, and finally 4 Km north-east. At what distance is he now from point 0?

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0 Km

4 Km

8 Km

12 Km

All trigonometric functions (sine, cosine, tangent etc) are positive in:

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

The vector is space has:

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One Component

Two Compnents

Three Components

Non of these

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

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30°

45°

60°

90°

When a vector is multiplied by a negative number, its direction:

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Remains the same

Changes

Changes by 180°

None of these

If x-component of a vector is -3 N and y-component is 3 N, then angle of resultant vector will x-axis is:

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45°

315°

135°

225°

The rectangular components of a vector are equal in magnitude when the vector makes and angle _______with their x-component:

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0°

30°

45°

60°

All trigonometric functions (since, cosine tangent etc. ) are positive in:

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1st Quadrant

2nd Quadrant

3rd Quadrant

4th Quadrant

The direction of a vector in space requires:

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X-axis

X and Y-axes

XYZ axes

Y and Z-axes

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

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0

1

2

3

The perpendicular distance from the axis of rotation to the line of action of force is called:

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Moment arm

Moment of a force

Torque

Non of these

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ECAT Pre General Science Physics Chapter 2 Vectors and Equilibrium Online Test MCQs With Answers

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