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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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none of these
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Question # 3
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0
1
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Question # 4
The unit vector along x-axis is
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none of these
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Question # 5
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0
1
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Question # 6
3j . k x i
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0
1
3
9
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Question # 7
Unit vector in the positive direction of x-axis is
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Question # 8
A vector of magnitude zero is called
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Position vector
Null vector
Free vector
None of these
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Question # 9
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 10
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none of these
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Question # 11
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direction ratios
direction cosines
direction angles
none of these
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Question # 12
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none of these
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Question # 13
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A
0
Unit vector
None
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Question # 14
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Question # 15
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 # 16
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 # 17
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 18
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 # 19
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Question # 20
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Question # 21
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 # 22
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Question # 23
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 # 24
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 25
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none of these
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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
Which of the following is a vector.
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work
time
density
electric field
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Question # 29
Which of the following is a scalar.
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force
frequency
weight
acceleration
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Question # 30
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Question # 31
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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