Options:
- A. 1
- B. i^
- C. j^
- D. k^
View Answer
A. 1
Physics
Three coplanar forces acting on a body keep it in equilibrium. They should therefore be_______________?
Options:
- A. Concurrent
- B. Non-concurrent
- C. Parallel
- D. Non-parallel
View Answer
A. Concurrent
The direction of the vector product is given by______________?
Options:
- A. Head to tail rule
- B. Right-hand rule
- C. Left-hand rule
- D. Triangular rule
View Answer
B. Right-hand rule
Which of the following pairs does not have identical dimensions ?
Options:
- A. Torque and energy
- B. Momentum and impulse
- C. Energy and work
- D. Mass and moment of inertia
View Answer
D. Mass and moment of inertia
If east, west, north, south, up and down are representing the direction of unit vectors, then east x south has the direction along_____________?
Options:
- A. West
- B. North
- C. Down
- D. Up
View Answer
C. Down
It is easier to turn a steering wheel with both hands than with a single hand because______________?
Options:
- A. Accelerating force increases on the wheel
- B. Two forces act on the wheel
- C. Two hands provide a firm grip
- D. The couple acts on the wheel
View Answer
D. The couple acts on the wheel
Null vector is a vector which has________________?
Options:
- A. Zero magnitude
- B. No specified direction
- C. Both A and B are correct
- D. Both A and B are not correct
View Answer
C. Both A and B are correct
The cross product i^ x j^ is equal to_______________?
Options:
- A. Zero
- B. One
- C. i^
- D. k^
View Answer
D. k^
Which one is a unit vector ?
Options:
- 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
View Answer
D. Both B and C are correct
The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?
Options:
- A. 2i^
- B. (2i^
- C. (2i^
- D. (2i^
View Answer
C. (2i^