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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
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 # 3
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 # 4
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0
1
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Question # 5
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Question # 6
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Question # 7
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25
16
5
0
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Question # 8
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none of these
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Question # 9
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 10
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none of these
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Question # 11
The position vector of any point in space is
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Question # 12
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0
1
-1
None
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Question # 13
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 # 14
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 15
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 # 16
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 17
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Question # 18
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none of these
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Question # 19
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0
1
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Question # 20
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Question # 21
Projection of vector u along v is
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|v| cosθ
|u| cosθ
|v| sinθ
|u| sinθ
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Question # 22
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none of these
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Question # 23
The position vector of the point P(a, b, c) is
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Question # 24
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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 # 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
Which of the following is a scalar
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weight
force
speed
momentum
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Question # 27
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Question # 28
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 # 29
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Question # 30
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 31
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 32
Unit vector in the positive direction of x-axis is
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