For anti-parallel vectors angle is equal to ____________?

Related Mcqs:

1. 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°

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. 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

4. The resultant of two forces of equal magnitudes is also equal to the magnitude of the forces. The angle between the two forces is________________?

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

5. 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°

6. 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

7. 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

8. 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

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

    A. Addition of vectors
    B. Subtraction of vectors
    C. Multiplication of vectors
    D. Resolution of vectors

    Submitted by: Zahid Jagirani