Unit vector n^ is along______________?

Related Mcqs:

1. The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?

   A. 2i^ – 2j^ + k^
   B. (2i^ – 2j^ +k^)/9
   C. (2i^ – 2j^ +k^)/3
   D. (2i^ – 2j^ +k^)/5

2. Two vectors A and B are making angle θ with each other. The scalar projection of vector B on vector A is written as____________?

   A. A.B/A
   B. A.B/B
   C. A.cosθ
   D. Both a and b are correct

3. Null vector is a vector which has________________?

   A. Zero magnitude
   B. No specified direction
   C. Both A and B are correct
   D. Both A and B are not correct

4. Which one is a unit vector ?

   A. ??3 i^ + ??3 j^ + ??3 k^
   B. 1/??3 i^ + 1/??3 j^ +1/ ??3 k^
   C. ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^
   D. Both B and C are correct

5. Unit vector is used to specify the _____________?

   A. Magnitude
   B. Velocity
   C. Direction of vector
   D. Frequency

   Submitted by: Chakar Hussain Shar

6. Maximum number of components of a vector may be________________?

   A. 1
   B. 2
   C. 3
   D. Infinite

7. Which one is not correct for a vector A= 2i+2j+3k ?

   A. Has direction 45° with an x-axis
   B. Has magnitude 2
   C. Has magnitude 2 and direction °=45° with a y-axis
   D. Has magnitude -2

8. What is the angle that the given vector makes with y-axis and A=2i+3j ?

   A. 30°
   B. 60°
   C. 90°
   D. 120°

9. In which quadrant the two rectangular components of a vector have same sign ?

   A. 1st
   B. 2nd
   C. Both 1st and 3rd
   D. 4th

10. The direction of the vector product is given by______________?

    A. Head to tail rule
    B. Right-hand rule
    C. Left-hand rule
    D. Triangular rule