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

A. 30°
B. 60°
C. 90°
D. 120°

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

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

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

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

If A=B, which of the following is not correct ?

A. b = a^ b^
B. |a| = |b|
C. |a^| = |b^|
D. Ab^ = ba^

I ^. (j^ x k^) is equal to______________?

A. 1
B. I^
C. J^
D. K^

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

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

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

Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?

A. Concurrent
B. Non-concurrent
C. Parallel
D. Non-parallel