Question # 1

A null vector is defined as a vector whose magnitude is:

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1

2

0

None of these

The cross product or vector product of two vectors is defined:

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Only in plane

Only in space

Both a and b

None of these

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3

4

5

6

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Position vector of O

Position vector of P

Unit vector

Null vector

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90°

30°

60°

0°

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0

1

-1

2

Which of the following is a vector quantity ?

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Work

Temperature

Distance

Displacement

A unit vector is defined as a vector whose magnitude is:

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0

2

1

4

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x - axis

z - axis

y - axis

None of these

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0

1

Which of the following is not a vector quantity ?

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Weight

Mass

Force

Velocity

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2 - 7

2 + 7

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0

2

3

1

A scalar quantity is one that possesses only :

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Magnitude

Direction

Both a and b

None of these

If 2 and 2 are x and y-components of a vector, then its angle with x-axis is:

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30°

45°

60°

90°

Zero vector is perpendicular to:

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Every vector

Unit vector only

Position vector only

Not any vector

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Unit vector

Null vector

Position vector

None of these

i.(j.k) =

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Meaningless

-1

1

2

Which are the following triples can be direction angles of a single vector:

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45°,45°,60°

30°,45°,60°

45°,60°,60°

30°,30°,30°

The law of parallelogram of addition was used by Aristotle to describe the combined action of :

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One force

Two forces

Three forces

Four forces

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Mathematics Fsc Part 2 Chapter 7 Online Test MCQs With Answers

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