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 a,b = 0 then	A. a |b B. a||b C. a = b D. None
2	The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:	A. π/2 B. -3π/2 C. π D. None of these
3	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
4	The magnitude of vector a=i-3j+5k is:	A. 3 B. √35 C. √17 D. √35
5	If aand bare two vectors then a+b =	A. b + a B. b - a C. ab D. a^ b
6	The modulus of 12-5i is:	A. 7 B. 13 C. √7 D. 119
7	The magnitude of vector a 2i-7j is	A. √23 B. √43 C. 3 D. √53
8	Vector i =	A. [1,0] B. [0,1,0] C. [0,0,1] D. None of these
9	I f a =5i + 2j, then|a| =	A. √13 B. √7 C. 1/√13 D. √29
10	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