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
Two vectors are A = 3i^+2j^ -k^& B = 3i^-2j^ +k^ , then Read More »
Physics
In which quadrant the two rectangular components of a vector have same sign ?
A. 1st
B. 2nd
C. Both 1st and 3rd
D. 4th
In which quadrant the two rectangular components of a vector have same sign ? Read More »
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
A central force is that which_ Read More »
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
If A=Ax i^ + Ay j^ + Az K^ B = Bx i^ + By j^ + Bz K^ then Read More »
The magnitude of i^. (j^ x k^) is_
A. 0
B. 1
C. -1
D. i^
The magnitude of i^. (j^ x k^) is_ Read More »
In which quadrant, the only value of tan will be positive ?
A. First
B. Second
C. Third
D. Both 1st and 3rd
In which quadrant, the only value of tan will be positive ? Read More »
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 cross product of two vectors is a negative vector when Read More »
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 unit vector in the direction of vector A = 2 i^ -2j^ + k^ is Read More »
The cross product i^ x j^ is equal to
A. Zero
B. One
C. i^
D. k^
The cross product i^ x j^ is equal to Read More »