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MCQ's Test For ECAT (Pre-Eng) Mathematics MCQ's Test For Chapter 23
Try The MCQ's Test For ECAT (Pre-Eng) Mathematics MCQ's Test For Chapter 23
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Total Questions10
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Time Allowed10
ECAT (Pre-Eng) Mathematics MCQ's Test For Chapter 23
00:00
Question # 1
If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =
Question # 2
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 3
If m and n be two scalars, then (m+n) g =
Question # 4
If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =
Question # 5
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
Question # 6
If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=
Question # 7
If G is the centroid of the triangle, then GA +GB+GC=
Question # 8
Vector additon is:
Question # 9
If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =
Question # 10
If u = xi + yj, then|u|
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If a = [1,4,3] and B= [2,-1,5] athen the mid point M of AB is: |
A. [1,1,1.5]
B. [2,2,1.5]
C. [1.5,1.5,4]
D. None of these
|
| 2 | If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p= |
A. 1
B. 2
C. -1
D. -3
|
| 3 | If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a = |
A. 4
B. 1/2
C. 3
D. 4/3
|
| 4 | If aand bare two vectors then a+b = |
A. b + a
B. b - a
C. ab
D. a^ b
|
| 5 | If a,b = 0 then |
A. a |b
B. a||b
C. a = b
D. None
|
| 6 | If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c = |
A. -i -15j
B. i-15j
C. i-3j
D. None of these
|
| 7 | The magnitude of vector a 2i-7j is |
A. √23
B. √43
C. 3
D. √53
|
| 8 | 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
|
| 9 | If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| = |
A. 4
B. 6
C. 5
D. 3
|
| 10 | If the sum of two unit vectors is a unit vector the the magnitude of their difference is |
A. √2
B. √3
C. 1
D. None of these
|
Test Questions