Mathematics MCQS for class 12 with Answers
For two vectors k & i, we have: k.i=
-1
1
0
2
If terminal point B of vector AB coincides with its initial point A then it is called:
Null vector
Zero vector
Unit vector
Both (b)&(c)
If i is a unit vector then i x i =
0
-1
1
2
If a & b are two non-zero vectors then a x b=a & b are two non-zero vectors then a x b=
None of these
a b
–a
ab
The dot product of unit vector j with unit vector k is
3
1
2
0
The unit vector along x-axis is denoted by:
None of these
The vector, whose initial point is the origin Oand whose terminal point is P i.e., OP is called:
Position vector
Null vector
Scalar
Unit vector