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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
If a +b +c =0 then which of the following is true
Choose an answer
a =b =c =0
a,b =b,c =c,a
a xb=b xc =c xa
None
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Question # 2
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Question # 3
[i,j,k]
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0
2
1
-2
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Question # 4
If uv= Projuv then
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Uandvare parallel
vis a unit vector
Uis a unit vector
Both b and c
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Question # 5
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perpendicular vectors
concurrent vectors
parallel vectors
none of these
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Question # 6
If a,b,c are three non-coplanar vector then [a +b,b +c,c +a] = _____
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[a.b.c]
2[a,b,c]
[abc]-2
2[abc]2
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Question # 7
A vector with magnitude one is called
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constant vector
unit vector
zero vector
null vector
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Question # 8
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none of these
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Question # 9
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Question # 10
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none of these
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Question # 11
Which of the following us a scalar
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displacement
velocity
acceleration
density
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Question # 12
The position vector of any point in space is
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Question # 13
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Question # 14
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none of these
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Question # 15
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 # 16
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Question # 17
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 # 18
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Question # 19
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 20
Which of the following is a vector
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length
momentum
volume
speed
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Question # 21
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Question # 22
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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Question # 23
The area of the rhombus whose vertices are A(0,0),B(2,1),C(3,3),D(1,2) is
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36 square units
3 square units
6 square units
18 square units
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Question # 24
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 25
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none of these
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Question # 26
Which of the following is a vector.
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work
time
density
electric field
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Question # 27
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0
1
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Question # 28
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 29
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 # 30
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