Which of the following is reverse process of composition of vectors?

Related Mcqs:

1. Which of the following can not be the resultant of two vectors having magnitude 10N and 15N?

   A. 18N
   B. 22N
   C. 25N
   D. 30N

   Submitted by: Zahid Jagirani

2. Reverse process of photoelectric effect is_______________?

   A. pair production
   B. Compton effect
   C. annihilation of matter
   D. X-rays production

3. 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°

4. 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

5. Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then_____________?

   A. B is anti-parallel to A
   B. B is a negative vector of A
   C. B has a negative magnitude
   D. B is perpendicular to A

6. If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along_____________?

   A. West
   B. North
   C. Down
   D. Up

7. The magnitude of the cross product is equal to the dot product between them. The angle between the two vectors is________________?

   A. 30°
   B. 45°
   C. 60°
   D. 180°

8. An angle between two vectors A and B can be determined by_____________?

   A. Their dot product
   B. Their cross product
   C. Head to tail rule
   D. Right-hand rule

9. What is the minimum number of unequal magnitude vectors required to get a null vector?

   A. Zero
   B. Two
   C. Three
   D. None

   Submitted by: Zahid Jagirani

10. Addition of vectors obeys_______law?

    A. Commutative Law
    B. Associative Law
    C. Distributive Law
    D. All of these

    Submitted by: Zahid Jagirani