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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
The positive real number which is the measure of the length of a vector is called the
Question # 2
If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=
Question # 3
If u = xi + yj, then|u|
Question # 4
If m and n be two scalars, then (m+n) g =
Question # 5
If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =
Question # 6
If|a| =|b| = |a+b|=1, then|a-b| is equal to:
Question # 7
The angle between the vectors u =2i - i + k and v = -i + i is:
Question # 8
If a=5j + 2j,b=2i -3j, then|a+2b|=
Question # 9
If u = 2ai + i - k and v = i +ai + 4k are perpendicular then a =
Question # 10
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | If the sum of two unit vectors is a unit vector the the magnitude of their difference is |
A. √2
B. √3
C. 1
D. None of these
|
| 2 | If a=5j + 2j,b=2i -3j, then|a+2b|= |
A. √21
B. √97
C. √39
D. None of these
|
| 3 | The angle between the vectors u =2i - i + k and v = -i + i is: |
A. 3π/2
B. 2π/3
C. 5π/6
D. π/3
|
| 4 | 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
|
| 5 | Vector additon is: |
A. Commutative
B. Associative
C. Commutative and Associative
D. None of these
|
| 6 | If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p= |
A. 1
B. 2
C. -1
D. -3
|
| 7 | If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]= |
A. √7
B. √41
C. √19
D. √(2&7)
|
| 8 | 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
|
| 9 | If G is the centroid of the triangle, then GA +GB+GC= |
A. 0
B. 1
C. -1
D. 3
|
| 10 | 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
|
Test Questions