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Online Tests

ECAT Mathematics Chapter 24 Vectors Online Test MCQs With Answers

Question # 1

3j . k x i

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0

1

3

9

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Question # 2

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12

6

8

none of these

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Question # 3

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Question # 4

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direction ratios

direction cosines

direction angles

none of these

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Question # 5

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0

1

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Question # 6

A vector of magnitude zero is called

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Position vector

Null vector

Free vector

None of these

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Question # 7

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Question # 8

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0

90°

180°

360°

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Question # 9

Which of the following represents a vector

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(x, y)

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Question # 10

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Question # 11

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none of these

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Question # 12

Which of the following is a scalar

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weight

force

speed

momentum

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Question # 13

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l²+ m²+ n²= 0

l²- m²+ n²= 1

l²+ m²+ n²= 1

l²+ m²- n²= 0

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Question # 14

The zero vector is

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[0, 0, 0]

[1, 1, 1]

[0, 1, 0]

[0, 0, 1]

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Question # 15

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Question # 16

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0

1

-1

None

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Question # 17

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Question # 18

Which of the following is a vector.

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energy

force

work

power

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Question # 19

The unit vector along z-axis is

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none of these

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Question # 20

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Question # 21

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Question # 22

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1

0

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Question # 23

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none of these

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Question # 24

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0

1

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Question # 25

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Question # 26

If θ be angle between u,v and u,v determine the sides of a triangle then the third side opposite to angle θ has length

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|u+v|

|u|+|v|

|u-v|

|u|-|v|

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Question # 27

Which of the following is a scalar.

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electric field

magnetic field

weight

mass

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Question # 28

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perpendicular vectors

concurrent vectors

parallel vectors

none of these

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Question # 29

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0

1

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Question # 30

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direction ratios

direction cosines

direction angles

none of these

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Question # 31

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parallel vectors

perpendicular vectors

concurrent vectors

collinear vectors

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