ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 23 (Conic Section)

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ECAT Mathematics Chapter 23 Important MCQ's

Sr.#	Question	Answer
1	If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:	A. Orthogonal B. Collinear C. Perpendicular D. None of these
2	If m and n be two scalars, then (m+n) g =	A. 0 B. m+n C. m▁a+n▁a D. ma - m▁a
3	If aand bare two vectors then a+b =	A. b + a B. b - a C. ab D. a^ b
4	If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=	A. √7 B. √41 C. √19 D. √(2&7)
5	If a,b = 0 then	A. a |b B. a||b C. a = b D. None
6	The angle between the vectors u =2i - i + k and v = -i + i is:	A. 3π/2 B. 2π/3 C. 5π/6 D. π/3
7	If G is the centroid of the triangle, then GA +GB+GC=	A. 0 B. 1 C. -1 D. 3
8	O (0,0)is called:	A. Position vector B. Free vector C. Unite vector D. Null vector
9	a ______quantity is one that possesses both magnitude and direction.	A. Scalar B. Vector C. Segment D. None of these
10	I f a =5i + 2j, then|a| =	A. √13 B. √7 C. 1/√13 D. √29