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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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 # 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 scalar
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weight
force
speed
momentum
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Question # 4
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Question # 5
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 # 6
Which of the following us a scalar
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displacement
velocity
acceleration
density
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Question # 7
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 # 8
The angle between the vectors 3i + j - k and 2i - j + k is
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Question # 9
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none of these
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Question # 10
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1
0
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Question # 11
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Question # 12
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Question # 13
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 14
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 # 15
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Question # 16
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1
0
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Question # 17
The position vector of the point P(a, b, c) is
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Question # 18
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 # 19
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 20
The unit vector along z-axis is
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none of these
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Question # 21
If a +b +c =0 then which of the following is true
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a =b =c =0
a,b =b,c =c,a
a xb=b xc =c xa
None
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Question # 22
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 # 23
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 # 24
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Question # 25
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 # 26
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Question # 27
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Question # 28
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Question # 29
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 30
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0
1
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Question # 31
If a force F = 2i + j +3k acts at point (1,-2,2) of a body then the moment of F about a pint lying on the line of action of the force is
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5
Equal to the moment of the force about origin
0
Cannot be found
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