Mathematics MCQS for class 12 with Answers
The vector i = [1, 0, 0] is called unit vector along
None of these
z-axis
y-axis
x-axis
Time, density, temperature, length, volume, speed and work are example of
Unit vectors
Both a and b
Vectors
Scalars
The zero vector is regarded to be parallel to:
Both(a)&(b)
None of these
Every vector
In some cases
i . i =
1
2
0
3
The dot product of unit vector k with unit vector i is
0
3
2
1
Which of triples can be direction angles of a single vector =
45
0
30
90
If three edges of a parallelepiped given as vectors a,b&cthen volume is
c.axb
a
a.bxc
All of these
Moment of force F ? about a point is given by
None of these
Cross prouduct
Dot prouct
Both (a) & (b)
A vector v is _________ to a vector kv, where k is a scalar
Perpendicular
None of these
Parallel
Equal
For three vectors a ,b,&c : (a+b) + c =
abc
a+(b+c)
ac + bc
a b c
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