Addition of vector obeys_____________?

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. A vector can be multiplied by a number. The number may be_______________?

   A. Dimensionless
   B. Dimensional scalar
   C. Negative
   D. All A, B and C are correct

5. Unit vector n^ is along______________?

   A. X-axis
   B. Normal on a surface
   C. Y-axis
   D. Z-axis

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

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

7. The cross product of two vectors is a negative vector when______________?

   A. They are parallel vectors
   B. They are anti parallel vectors
   C. They are a perpendicular vector
   D. They are rotated through 270°

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. 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

10. 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