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Online Tests
ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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Question # 2
Which of the following is a scalar.
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force
frequency
weight
acceleration
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Question # 3
If a,b c are sides of a triangle taken in order then a x b =
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b x c
b x a
cxa
Both a & b
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Question # 4
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 5
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Question # 6
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 # 7
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 # 8
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25
16
5
0
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Question # 9
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Question # 10
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0
1
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Question # 11
[i,j,k]
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0
2
1
-2
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Question # 12
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Question # 13
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Free vector
Null vector
Unit vector
None of these
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Question # 14
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 # 15
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 # 16
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 # 17
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Question # 18
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 # 19
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Question # 20
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none of these
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Question # 21
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 22
Which of the vectors have opposite direction?
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Question # 23
Which of the following is a vector.
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work
time
density
electric field
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Question # 24
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Question # 25
The angle between the vectors 3i + j - k and 2i - j + k is
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Question # 26
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 27
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none of these
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Question # 28
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Question # 29
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 # 30
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 # 31
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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