Question # 1

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x - axis

z - axis

y - axis

None of these

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1

0

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1

2

3

0

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

2

3

1

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3

4

5

6

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28

29

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2 - 7

2 + 7

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Position vector of O

Position vector of P

Unit vector

Null vector

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Volume of the tetrahedron

Volume of the parallelepiped

Volume of the triangle

None of these

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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Position vector

Null vector

Unit vector

None of these

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Free vector

Unit vector

Null vector

None of these

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0

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°

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0

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0

1

-1

2

Zero vector is perpendicular to:

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Every vector

Unit vector only

Position vector only

Not any vector

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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90°

30°

60°

0°

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Unit vector

Null vector

Free vector

None of these

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0

1

-1

2

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