Question # 1

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a

b

c

a + b

Which of the following is not a vector quantity ?

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Weight

Mass

Force

Velocity

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

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1

2

0

None of these

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2 - 7

2 + 7

Zero vector is perpendicular to:

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Every vector

Unit vector only

Position vector only

Not any vector

If any two vectors of scalar triple product are equal, then its value is equal to:

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0

1

-1

2

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

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0

2

1

4

i.(j.k) =

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Meaningless

-1

1

2

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60°

90°

30°

45°

Which of the following is a vector quantity ?

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Work

Temperature

Distance

Displacement

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0

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x - axis

z - axis

y - axis

None of these

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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Position vector of O

Position vector of P

Unit vector

Null vector

Two vectors are equal if they:

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Pass through the same point

Are parallel to each other

Are parallel to each other and have same direction

Have equal magnitude and have same direction

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0

2

3

1

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°

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A scalar quantity is one that possesses only :

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Magnitude

Direction

Both a and b

None of these

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0

2

3

1

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3

4

5

6

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°

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0

1

-1

2

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