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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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0
1
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Question # 2
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 # 3
Which of the following is a vector
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length
momentum
volume
speed
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Question # 4
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Question # 5
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Question # 6
Which of the following is a scalar.
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force
frequency
weight
acceleration
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Question # 7
If a,b,c are unit vectors then |a + b|2 +|a - b|2
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4
8ab
9cos
4(a,b)
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Question # 8
Unit vector in the positive direction of x-axis is
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Question # 9
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 # 10
3j . k x i
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0
1
3
9
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Question # 11
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 12
The direction cosines of y-axis are
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1, 0, 0
0, 1, 0
0, 0, 1
1, 1, 1
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Question # 13
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0
1
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Question # 14
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 # 15
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Question # 16
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 17
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Free vector
Null vector
Unit vector
None of these
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Question # 18
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l
2
+ m
2
+ n
2
= 0
l
2
- m
2
+ n
2
= 1
l
2
+ m
2
+ n
2
= 1
l
2
+ m
2
- n
2
= 0
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Question # 19
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 # 20
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1
0
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Question # 21
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Question # 22
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Question # 23
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 24
u,v,wand u x (v.w) are
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Equal
Parallel
Additive immense of each other
Meaningless
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Question # 25
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 26
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none of these
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Question # 27
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Question # 28
Which of the following is a vector.
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work
time
density
electric field
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Question # 29
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none of these
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Question # 30
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Question # 31
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A
0
Unit vector
None
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Question # 32
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none of these
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