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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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Question # 2
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Question # 3
The physical quantity which can be specified by a number alongwith unit is called a
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scalar
vector
constant
none of these
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Question # 4
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 5
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A
0
Unit vector
None
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Question # 6
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Question # 7
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0
1
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Question # 8
If the angle between two vectors with magnitude 2 and 15 is 30
°
then their scalar product is
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15
30
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Question # 9
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 10
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 11
Three points whose position vector a,b,c are collinear
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axb +b x c+ c x a = 0
a,b +b,c +c,a =0
a,|a xc| =0
a+b+c =0
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Question # 12
The position vector of any point in space is
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Question # 13
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 # 14
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 15
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 # 16
If the angle between two vectors with magnitude 6 and 2 is 60° when their scalar product is
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12
6
3
0
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Question # 17
Which of the following is a scalar.
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force
frequency
weight
acceleration
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Question # 18
Unit vector in the positive direction of x-axis is
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Question # 19
The position vector of the point P(a, b, c) is
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Question # 20
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 # 21
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1
0
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Question # 22
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none of these
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Question # 23
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0
90°
180°
360°
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Question # 24
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25
16
5
0
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Question # 25
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 # 26
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0
1
-1
None
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Question # 27
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 28
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 29
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none of these
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Question # 30
A vector of magnitude zero is called
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Position vector
Null vector
Free vector
None of these
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