The position vector of a point $P(x,y,z)$ in three-dimensional space is given by
A$x+y+z$
B$x\mathbf{i}+y\mathbf{j}+z\mathbf{k}$
C$xy\mathbf{i}+yz\mathbf{j}+zx\mathbf{k}$
D$\langle \mathbf{i},\mathbf{j},\mathbf{k}\rangle$
Answer & Solution
Correct answer: B. $x\mathbf{i}+y\mathbf{j}+z\mathbf{k}$
By definition, the position vector of $P(x,y,z)$ is $\mathbf{r}=\langle x,y,z\rangle=x\mathbf{i}+y\mathbf{j}+z\mathbf{k}$.
The other options do not represent the coordinate vector from the origin to the point.
Keep practising General Knowledge
Browse all General Knowledge questions for JEE Advanced, or explore more General Science topics.
Related questions
Which statement best defines work done by a force in mechanics?Work done by a force on a body is negative when:In an ideal pendulum oscillating without air resistance, which quantity remains constant?Which of the following is an example of elastic potential energy?According to the work-energy theorem, the net work done on a particle is equal to:In a system where only conservative forces act, which quantity remains constant?Average power is defined as:Instantaneous power delivered by a force is best expressed as: