Question # 1

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Scalar quantity

Reciprocal 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

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0

2

3

1

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Free vector

Unit vector

Null vector

None of these

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2 - 7

2 + 7

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28

29

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[0]

[0, 0]

[0, 0, 0]

None of these

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Position vector of O

Position vector of P

Unit vector

Null vector

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0

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x - axis

z - axis

y - axis

None of these

A scalar quantity is one that possesses only :

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Magnitude

Direction

Both a and b

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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a

b

c

a + b

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0

1

-1

2

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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Unit vector

Null vector

Free vector

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

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

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0

2

1

4

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1

2

3

0

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