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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
If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =
Question # 3
Vector additon is:
Question # 4
If the angle between two vectors u and v is 0 orπ, then the vectors u and v are:
Question # 5
O (0,0)is called:
Question # 6
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
Question # 7
The positive real number which is the measure of the length of a vector is called the
Question # 8
Vector i =
Question # 9
a ______quantity is one that possesses both magnitude and direction.
Question # 10
If m and n be two scalars, then (m+n) g =
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]= |
A. √7
B. √41
C. √19
D. √(2&7)
|
| 2 | If a,b = 0 then |
A. a |b
B. a||b
C. a = b
D. None
|
| 3 | The modulus of 12-5i is: |
A. 7
B. 13
C. √7
D. 119
|
| 4 | The positive real number which is the measure of the length of a vector is called the |
A. Unit vector
B. Modulus
C. Inverse
D. None of these
|
| 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| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| = |
A. 4
B. 6
C. 5
D. 3
|
| 7 | If u = xi + yj, then|u| |
A. x2 + y2
B. (x2 +y2)2
C. x2-y2
D. √(x2+y2)
|
| 8 | 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
|
| 9 | I f a =5i + 2j, then|a| = |
A. √13
B. √7
C. 1/√13
D. √29
|
| 10 | O (0,0)is called: |
A. Position vector
B. Free vector
C. Unite vector
D. Null vector
|
Test Questions