A force of 5 N acts on a particle along a direction making an angle of 60° with vertical. Its vertical component be ____.
10 N
3 N
4 N
2.5 N
How much minimum number of coplanar vectors having different magnitudes can be added to give zero resultant?
2
3
4
5
The unit vector along is ____.
Any vector in an arbitrary direction can always be replaced by two (or three) ____.
Parallel vectors which have the original vector as their resultant
Mutually perpendicular vectors which have the original vector as their resultant
Arbitrary vectors which have the original vector as their resultant
It is not possible to resolve a vector
Angular momentum is ____.
A scalar
A polar vector
An axial vector
None of the above
Which of the following is a vector?
Pressure
Surface tension
Moment of inertia
None of the above
Which of the following is a scalar quantity?
Displacement
Electric field
Acceleration
Work
A boy walks uniformly along the sides of a rectangular park of size 400 m× 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statement is incorrect?
He has traveled a distance of 700 m
His displacement is 700 m
His displacement is 500 m
His velocity is not uniform throughout the walk
Surface area is ____.
Scalar
Vector
Neither scalar nor vector
Both scalar and vector