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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
Which of the vectors have opposite direction?
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Question # 2
If a,b c are sides of a triangle taken in order then a x b =
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b x c
b x a
cxa
Both a & b
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Question # 3
Which of the following is not a unit vector
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[1, 1, 1]
[0, 1, 0]
[0, 0, 1]
[1, 0, 0]
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Question # 4
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none of these
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Question # 5
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none of these
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Question # 6
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 # 7
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Question # 8
A vector with magnitude one is called
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constant vector
unit vector
zero vector
null vector
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Question # 9
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Question # 10
The unit vector along z-axis is
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none of these
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Question # 11
The zero vector is regarded to be parallel to
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Every vector
Is some cases
Both a,b
None
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Question # 12
The ortho center of triangle whose vertices are (0,0)(3,0)(0,4) is
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(0,0)
(1,1)
(2,2)
(3,3)
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Question # 13
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perpendicular vectors
concurrent vectors
parallel vectors
none of these
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Question # 14
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25
16
5
0
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Question # 15
Which of the following is a scalar
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weight
force
speed
momentum
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Question # 16
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Question # 17
If 2 and 2 are x and y components of vector then its angle with x-axis is
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30
°
45
°
60
°
90
°
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Question # 18
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none of these
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Question # 19
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direction ratios
direction cosines
direction angles
none of these
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Question # 20
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none of these
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Question # 21
If C is the mid point of AB and P is any point outside AB, then
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Question # 22
The angle between the vectors 3i + j - k and 2i - j + k is
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Question # 23
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Question # 24
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0
1
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Question # 25
If |αi + (α+1)j +2k| =3 then value of α is
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1,2
-1,-2
1,-2
-1,2
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Question # 26
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Question # 27
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A,. B, C are coincident
A, B, C are collinear
Both A and B
None of these
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Question # 28
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none of these
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Question # 29
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 30
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A
0
Unit vector
None
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Question # 31
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none of these
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Question # 32
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none of these
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