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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
I f a =5i + 2j, then|a| =
Question # 2
If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=
Question # 3
The modulus of a vector i-i+ k is:
Question # 4
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
Question # 5
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 6
If u = xi + yj, then|u|
Question # 7
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 8
If a,b = 0 then
Question # 9
O (0,0)is called:
Question # 10
If a=5j + 2j,b=2i -3j, then|a+2b|=
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If u =[3,-4],then modulus of uis: |
A. 5
B. 5i
C. -5
D. √5
|
| 2 | If|a| =|b| = |a+b|=1, then|a-b| is equal to: |
A. 1
B. √3
C. √2
D. 7
|
| 3 | If G is the centroid of the triangle, then GA +GB+GC= |
A. 0
B. 1
C. -1
D. 3
|
| 4 | O (0,0)is called: |
A. Position vector
B. Free vector
C. Unite vector
D. Null vector
|
| 5 | 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
|
| 6 | If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]= |
A. √7
B. √41
C. √19
D. √(2&7)
|
| 7 | The modulus of a vector i-i+ k is: |
A. √3
B. 1
C. √2
D. ∞
|
| 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 u = 2ai + i - k and v = i +ai + 4k are perpendicular then a = |
A. 4
B. 1/2
C. 3
D. 4/3
|
| 10 | The magnitude of vector a 2i-7j is |
A. √23
B. √43
C. 3
D. √53
|
Test Questions
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