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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
I f a =5i + 2j, then|a| =
Question # 3
The modulus of 12-5i is:
Question # 4
If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =
Question # 5
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 6
The vector i = [1,0] is called unit vector along:
Question # 7
If u =[3,-4],then modulus of uis:
Question # 8
If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =
Question # 9
If a≠ , b≠ 0 and|a=b|=|a-b|,then vectors a and b are:
Question # 10
The angle between the vectors u = [-3 , 5] and v = [6 , -2] 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 | 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
|
| 2 | O (0,0)is called: |
A. Position vector
B. Free vector
C. Unite vector
D. Null vector
|
| 3 | If a=5j + 2j,b=2i -3j, then|a+2b|= |
A. √21
B. √97
C. √39
D. None of these
|
| 4 | The vector i = [1,0] is called unit vector along: |
A. x-axis
B. y - axis
C. z- axis
D. Botha a and y-axis
|
| 5 | I f a =5i + 2j, then|a| = |
A. √13
B. √7
C. 1/√13
D. √29
|
| 6 | If u = xi + yj, then|u| |
A. x2 + y2
B. (x2 +y2)2
C. x2-y2
D. √(x2+y2)
|
| 7 | The magnitude of vector a 2i-7j is |
A. √23
B. √43
C. 3
D. √53
|
| 8 | 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
|
| 9 | If|a| =|b| = |a+b|=1, then|a-b| is equal to: |
A. 1
B. √3
C. √2
D. 7
|
| 10 | If a,b = 0 then |
A. a |b
B. a||b
C. a = b
D. None
|
Test Questions