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Mathematics ECAT Pre Engineering Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
If a,b c are sides of a triangle taken in order then a x b =
Choose an answer
b x c
b x a
cxa
Both a & b
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Question # 2
Which of the following is a vector.
Choose an answer
work
time
density
electric field
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Question # 3
If the angle between two vectors with magnitude 6 and 2 is 60° when their scalar product is
Choose an answer
12
6
3
0
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Question # 4
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none of these
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Question # 5
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Question # 6
If θ be angle between u,v and u,v determine the sides of a triangle then the third side opposite to angle θ has length
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|u+v|
|u|+|v|
|u-v|
|u|-|v|
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Question # 7
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none of these
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Question # 8
The unit vector along z-axis is
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none of these
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Question # 9
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Question # 10
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Question # 11
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perpendicular vectors
parallel vectors
concurrent vectors
none of these
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Question # 12
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Question # 13
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0
1
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Question # 14
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 # 15
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l
2
+ m
2
+ n
2
= 0
l
2
- m
2
+ n
2
= 1
l
2
+ m
2
+ n
2
= 1
l
2
+ m
2
- n
2
= 0
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Question # 16
The zero vector is regarded to be parallel to
Choose an answer
Every vector
Is some cases
Both a,b
None
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Question # 17
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0
1
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Question # 18
Which of the following represents a vector
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(x, y)
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Question # 19
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Question # 20
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Question # 21
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Question # 22
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none of these
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Question # 23
The area of the rhombus whose vertices are A(0,0),B(2,1),C(3,3),D(1,2) is
Choose an answer
36 square units
3 square units
6 square units
18 square units
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Question # 24
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Question # 25
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perpendicular vectors
concurrent vectors
parallel vectors
none of these
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Question # 26
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 # 27
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Question # 28
If C is the mid point of AB and P is any point outside AB, then
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Question # 29
The physical quantity which possesses both magnitude and direction is called a
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scalar
vector
constant
none of these
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Question # 30
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none of these
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Question # 31
Which of the following is a scalar
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weight
force
speed
momentum
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