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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 modulus of a vector i-i+ k is:
Question # 2
If a = 2i +2j, b= 3i -j and c=4i +5j, the 3b -a-2c =
Question # 3
If u = xi + yj, then|u|
Question # 4
If a=5j + 2j,b=2i -3j, then|a+2b|=
Question # 5
If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p=
Question # 6
If c = 2i+j+k and d= -1 + 4j +2k, then [c-d]=
Question # 7
If the sum of two unit vectors is a unit vector the the magnitude of their difference is
Question # 8
O (0,0)is called:
Question # 9
If m and n be two scalars, then (m+n) g =
Question # 10
If|a| =|b|=|a + b|=1, then|a+ b| = 5, then|a-b| =
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ECAT Mathematics Chapter 23 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The modulus of a vector i-i+ k is: |
A. √3
B. 1
C. √2
D. ∞
|
| 2 | O (0,0)is called: |
A. Position vector
B. Free vector
C. Unite vector
D. Null vector
|
| 3 | If u =2i +pi + 5k and v = 3i + i +pk are perpendicular , then p= |
A. 1
B. 2
C. -1
D. -3
|
| 4 | The modulus of 12-5i is: |
A. 7
B. 13
C. √7
D. 119
|
| 5 | If u = xi + yj, then|u| |
A. x2 + y2
B. (x2 +y2)2
C. x2-y2
D. √(x2+y2)
|
| 6 | If u =[3,-4],then modulus of uis: |
A. 5
B. 5i
C. -5
D. √5
|
| 7 | If a=5j + 2j,b=2i -3j, then|a+2b|= |
A. √21
B. √97
C. √39
D. None of these
|
| 8 | 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
|
| 9 | 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
|
| 10 | If|a| =|b| = |a+b|=1, then|a-b| is equal to: |
A. 1
B. √3
C. √2
D. 7
|
Test Questions