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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 u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =
Question # 2
The angle between the vectors u = [-3 , 5] and v = [6 , -2] is:
Question # 3
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
Question # 4
The modulus of a vector i-i+ k is:
Question # 5
The magnitude of vector a 2i-7j is
Question # 6
a ______quantity is one that possesses both magnitude and direction.
Question # 7
The vector i = [1,0] is called unit vector along:
Question # 8
If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =
Question # 9
O (0,0)is called:
Question # 10
Vector additon is:
Top Scorers Of ECAT (Pre-Eng) Mathematics MCQ's Test For Chapter 23 MCQ`s Test
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The vector k = [0,0,1] is called unit vector along: |
A. x -axis
B. y - axis
C. z- axis
D. None of these
|
| 2 | If a,b = 0 then |
A. a |b
B. a||b
C. a = b
D. None
|
| 3 | If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]= |
A. √7
B. √41
C. √19
D. √(2&7)
|
| 4 | The magnitude of vector a 2i-7j is |
A. √23
B. √43
C. 3
D. √53
|
| 5 | If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a = |
A. 4
B. 1/2
C. 3
D. 4/3
|
| 6 | If a=5j + 2j,b=2i -3j, then|a+2b|= |
A. √21
B. √97
C. √39
D. None of these
|
| 7 | O (0,0)is called: |
A. Position vector
B. Free vector
C. Unite vector
D. Null vector
|
| 8 | If aand bare two vectors then a+b = |
A. b + a
B. b - a
C. ab
D. a^ b
|
| 9 | If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are: |
A. Parallel to each other
B. Perpendicular to each other
C. Inclined at 60o
D. neither parallel nor perpendicular
|
| 10 | 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
|
Test Questions