ECAT Mathematics Chapter 23 online mcq test with answers for chapter 23 (Conic Section)

ECAT Mathematics Chapter 23 Pre Engineering Online Test

Sr. #	Questions	Answers Choice
1	If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =	4 1/2 3 4/3
2	The angle between the vectors u =2i - i + k and v = -i + i is:	3π/2 2π/3 5π/6 π/3
3	The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:	π/2 -3π/2 π None of these
4	If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:	Orthogonal Collinear Perpendicular None of these
5	If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:	Orthogonal Collinear Perpendicular None of these
6	If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=	1 2 -1 -3
7	The modulus of a vector i-i+ k is:	√3 1 √2 ∞
8	If u =[3,-4],then modulus of uis:	5 5i -5 √5
9	If aand bare two vectors then a+b =	b + a b - a ab a^ b
10	If a≠ , b≠ 0 and\|a=b\|=\|a-b\|,then vectors a and b are:	Parallel to each other Perpendicular to each other Inclined at 60<sup>o</sup> neither parallel nor perpendicular