A null vector has
zero magnitude and a specific direction
a finite magnitude and no specific direction
a finite magnitude and a specific direction
zero magnitude and no specific direction.
If →A=→B, then their difference →A−→B is defined as a null vector. It has a zero magnitude and no specific direction. Hence the correct choice is (d).
wrong statement ?
a)vectors are having both magnitude and direction
b)a unit vector has no dimention and unit
c) a null vector is having specific direction
d)a unit vector is used to specify only direction
e)vector addition is commutative
Why work is considered as a scalar quantity although force and displacement are vector quantities(i.e. they have a specific magnitude as well as direction)?