Question

Choose the correct option regarding a null vector among the followings

• A. If Sameer starts moving in a circular path from point $A$ and comes back at the same point at the end of his journey, his net displacement is a null vector.
• B. If Rahul pulls a block with a force of $5\text{N}$ in $+x$ direction and his friend Akash pulls the block with a force of same magnitude but in $-x$ direction, the net force on the block is a null vector.
• C. The position vector of origin is a null vector.
• D. All of the above

Answer 1

The correct option is D All of the above

A null vector has zero magnitude and direction not defined. All the options satisfy this condition.