What is the angle that the given vector makes with y-axis and A=2i+3j ?
A. 30°
B. 60°
C. 90°
D. 120°
Physics Mcqs
A central force is that which__________________?
A central force is that which__________________?
A. Can produce torque
B. Cannot produce torque
C. Some time can produce torque some time cannot
D. Has no relation with torque
If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then______________?
If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then______________?
A. A. B = Ax Bx + Ay By + Az Bz
B. A. B = Ax By + Ay Bz + Az By
C. A. B = Ay Bz + Az By + Az Bx
D. A. B = Ax Bz + Ay By + Az Bx
The magnitude of i^. (j^ x k^) is________________?
The magnitude of i^. (j^ x k^) is________________?
A. 0
B. 1
C. -1
D. i^
In which quadrant, the only value of tan will be positive ?
In which quadrant, the only value of tan will be positive ?
A. First
B. Second
C. Third
D. Both 1st and 3rd
The cross product of two vectors is a negative vector when______________?
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°
The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?
The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?
A. 2i^ – 2j^ + k^
B. (2i^ – 2j^ +k^)/9
C. (2i^ – 2j^ +k^)/3
D. (2i^ – 2j^ +k^)/5
The cross product i^ x j^ is equal to_______________?
The cross product i^ x j^ is equal to_______________?
A. Zero
B. One
C. i^
D. k^
It is easier to turn a steering wheel with both hands than with a single hand because______________?
It is easier to turn a steering wheel with both hands than with a single hand because______________?
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
Which of the following pairs does not have identical dimensions ?
Which of the following pairs does not have identical dimensions ?
A. Torque and energy
B. Momentum and impulse
C. Energy and work
D. Mass and moment of inertia