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ECAT Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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Question # 2
If a,b,c are three non-coplanar vector then [a +b,b +c,c +a] = _____
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[a.b.c]
2[a,b,c]
[abc]-2
2[abc]2
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Question # 3
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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 # 4
If a2 = b2 then
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a = b
a+b= 1
|a+b| =0
None
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Question # 5
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0
90°
180°
360°
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Question # 6
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0
1
-1
None
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Question # 7
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 # 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
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none of these
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Question # 10
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Question # 11
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1
0
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Question # 12
Which of the following does not represent absolute value of a vector
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magnitude
length
norm
number
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Question # 13
Which of the following represents a vector
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(x, y)
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Question # 14
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Question # 15
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Question # 16
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direction ratios
direction cosines
direction angles
none of these
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Question # 17
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 # 18
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none of these
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Question # 19
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parallel vectors
perpendicular vectors
concurrent vectors
collinear vectors
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Question # 20
Which of the following is a scalar.
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force
frequency
weight
acceleration
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Question # 21
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12
6
8
none of these
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Question # 22
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perpendicular vectors
parallel vectors
concurrent vectors
none of these
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Question # 23
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 24
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 25
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none of these
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Question # 26
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 # 27
Unit vector in the positive direction of x-axis is
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Question # 28
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none of these
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Question # 29
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 30
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none of these
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Question # 31
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none of these
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Question # 32
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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