Question # 1

Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer:

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100 N

70 N

20 N

Zero

The change of order of vectors in a dot product of two vectors:

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Changes its value

Doesn't change it's value

Changes the direction product quantity

None of these

By convention, torques producing clockwise rotation are taken as:

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Positive

Nagative

Zero

None of these

A vector which has magnitude 'one' is called:

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Resultant vector

A unit vector

Position vector

None of these

An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:

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45°

90°

135°

Zero

Which of the following is scalar quantity?

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Electric potential

Velocity

Momentum

Force

The magnitude of the resultant of two forces may be increased by:

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Increasing the angle between them

Decreasing the angle between them

Drawing a triangle to represent them

None of these

The direction of vector in space is specified by:

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One angle

Two angles

Three angles

None of these

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

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

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1st Quadrant

2nd Quadrant

3rd Quadrant

4th Quadrant

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

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20 N

-2 N

18 N

36 N

Two forces each of 10 N act on a body, if the force are inclined at 30° and 60° respectively with x-axis, then x-component of their resultant is:

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20 N

13.66 N

10 N

8.66 N

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

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