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1. If a, b, c and d are the position vectors of the points A, B, C and D such that a + c = b + d, then ABCD is a
A. Trapezium
B. Rectangle
C. Square
D. Parallelogram
3. Two or more vectors having the same initial point are called
A. co-terminus vectors.
B. zero vectors
C. co-initial vectors
D. unit vectors
7. What is the additive identity of a vector?
A. zero vector
B. Negative of the vector
C. unit vector
D. The vector itself
9. If a and b are the position vectors of two points A and B and C is a point on AB produced such that AC = 3AB, then position vector of C will be
A. 3b - 2a
B. 3a - b
C. 3a - 2b
D. 3b - a
10. Vector of magnitude 1 is called.
A. Constant vector
B. Zero vector
C. Unit vector
D. None of these
12. The direction of zero vector.
A. Is towards the origin
B. Is towards a fixed point
C. Does not exist
D. Is indeterminate
16. For any two vectors a and b
A. |a - b| ≥ |a| - |b|
B. |a - b| = |a| - |b|
C. |a + b| ≤ |a - |b|
D. |a - b| = |a + b|
17. Vectors that may be subject to its parallel displacement without changing its magnitude and direction are called _________.
A. Free vectors
B. Coinitial vectors
C. Collinear vectors.
D. Parallel vectors.
18. A vector whose initial and terminal points coincide, is called
A. zero vector
B. unit vector
C. equal vectors
D. coterminus vectors
19. A point from a vector starts is called ...... and where it ends is called its ......
A. terminal point, end point.
B. initial point, terminal point
C. Origin, end point
D. initial point, end point
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