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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 2
If a2 = b2 then
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a = b
a+b= 1
|a+b| =0
None
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Question # 3
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 # 4
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none of these
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Question # 5
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 6
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0
1
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Question # 7
The position vector of the point P(a, b, c) is
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Question # 8
For two vector a and b, a+b = _______
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a b
b+a
b-a
None
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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
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0
1
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Question # 12
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 13
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 # 14
The unit vector along x-axis is
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none of these
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Question # 15
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Question # 16
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none of these
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Question # 17
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Question # 18
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Question # 19
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Question # 20
If C is the mid point of AB and P is any point outside AB, then
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Question # 21
Unit vector in the positive direction of x-axis is
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Question # 22
[i,j,k]
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0
2
1
-2
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Question # 23
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 24
The unit vector along z-axis is
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none of these
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Question # 25
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12
6
8
none of these
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Question # 26
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Question # 27
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Question # 28
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Question # 29
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 # 30
If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?
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0
2
4
7
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Question # 31
The number z so that the triangle with vertices A(1,-1,0),B(-2,2,1)and C(0,2,z) is a right triangle with right angle at vertex C
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1,2
-1,-2
2,-1
-2,1
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