Question # 1

Which of the following is not a vector quantity ?

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Weight

Mass

Force

Velocity

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0

1

-1

2

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a

b

c

a + b

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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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0

1

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Volume of the tetrahedron

Volume of the parallelepiped

Volume of the triangle

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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x - axis

z - axis

y - axis

None of these

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

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1

2

0

None of these

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

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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2 - 7

2 + 7

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Which of the following is a vector quantity ?

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Work

Temperature

Distance

Displacement

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Unit vector

Null vector

Free vector

None of these

Zero vector is perpendicular to:

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Every vector

Unit vector only

Position vector only

Not any vector

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0

2

3

1

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Position vector of O

Position vector of P

Unit vector

Null vector

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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3

4

5

6

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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0

1

-1

2

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