The component of a vector $\vec{r}$ along $x$-axis will have maximum value if
- $\vec{r}$ is along positive $y$ -axis
- $\vec{r}$ is along positive $x$ -axis
- $\vec{r}$ makes an angle of $45^?$ with the $x$-axis
- $\vec{r}$ is along negative $x$ -axis
The Correct Option is B
Solution and Explanation
which is maximum when $\theta=0^{\circ}$
So, $r$ will be along positive $X$ -axis for maximum value.
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Concepts Used:
Vector Basics
What is a Vector Quantity?
Vector Quantity is a physical quantity that is specified not only by its magnitude but also by its direction. A vector quantity whose magnitude is equal to one and has direction is called a unit vector.
Examples of vector quantity are-
- Displacement
- Linear momentum
- Momentum
- Acceleration
- Force
- Electric field
- Angular velocity
- Polarization