The component of a vector `vec(r)` along x- axis will have a maximum value if

Options

A. `vec(r)` is along +ve x- axis
B. `vec(r)` is along +ve y-axis
C. `vec(r)` is along -Ve y- axis
D. `vec(r)` makes an angle of `45^(2)` with the x- axis

Answer

a

Explanation

: A vector has a maximum value along its own direction only . Hence the component of a vector `vec(r )` along x- axis will have a maximum value if `vec(r )`is along positive x- axis