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ECAT Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
Choose an answer
none of these
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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 vector.
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energy
force
work
power
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Question # 4
The position vector of the point P(a, b, c) is
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Question # 5
Which of the following us a scalar
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displacement
velocity
acceleration
density
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Question # 6
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0
1
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Question # 7
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Question # 8
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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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
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 # 12
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a
1
+ a
2
a
2
1
+ a
2
2
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Question # 13
The unit vector along x-axis is
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none of these
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Question # 14
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Question # 15
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 # 16
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 17
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none of these
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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
The number z so that the triangle with vertices A(1,-1,0),B(-2,2,1)and C(0,2,z) is a right triangle with right angle at vertex C
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1,2
-1,-2
2,-1
-2,1
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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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0
1
-1
None
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Question # 22
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direction ratios
direction cosines
direction angles
none of these
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Question # 23
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 # 24
If C is the mid point of AB and P is any point outside AB, then
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Question # 25
Which of the following is a vector.
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distance
temperature
energy
acceleration
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Question # 26
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Question # 27
The direction cosines of y-axis are
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1, 0, 0
0, 1, 0
0, 0, 1
1, 1, 1
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Question # 28
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1
0
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Question # 29
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 # 30
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
Choose an answer
5
Equal to the moment of the force about origin
0
Cannot be found
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Question # 31
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none of these
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