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
Physics
Torque is defined as
A. Turning effect of force
B. Cross product of position vector and force
C. Product of force and moment arm
D. All A, B and C are correct
Torque is defined as Read More »
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
An angle between two vectors A and B can be determined by Read More »
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
Which one is a unit vector ? Read More »
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
Null vector is a vector which has Read More »
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
The direction of the vector product is given by Read More »
If A=B, which of the following is not correct ?
A. A.B = A^ B^
B. |A| = |B|
C. |A^| = |B^|
D. AB^ = BA^
If A=B, which of the following is not correct ? Read More »