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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 a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:
Question # 3
If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=
Question # 4
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 5
The magnitude of vector a=i-3j+5k is:
Question # 6
The modulus of 12-5i is:
Question # 7
If a = [1,4,3] and B= [2,-1,5] athen the mid point M of AB is:
Question # 8
The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:
Question # 9
If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =
Question # 10
If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =
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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 aand bare two vectors then a+b = |
A. b + a
B. b - a
C. ab
D. a^ b
|
| 3 | If|a| =|b| = |a+b|=1, then|a-b| is equal to: |
A. 1
B. √3
C. √2
D. 7
|
| 4 | The magnitude of vector a=i-3j+5k is: |
A. 3
B. √35
C. √17
D. √35
|
| 5 | The vector k = [0,0,1] is called unit vector along: |
A. x -axis
B. y - axis
C. z- axis
D. None of these
|
| 6 | The modulus of a vector i-i+ k is: |
A. √3
B. 1
C. √2
D. ∞
|
| 7 | If a=5j + 2j,b=2i -3j, then|a+2b|= |
A. √21
B. √97
C. √39
D. None of these
|
| 8 | If G is the centroid of the triangle, then GA +GB+GC= |
A. 0
B. 1
C. -1
D. 3
|
| 9 | Vector additon is: |
A. Commutative
B. Associative
C. Commutative and Associative
D. None of these
|
| 10 | If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a = |
A. 4
B. 1/2
C. 3
D. 4/3
|
Test Questions