Question

The component of a vector r along x-axis will have maximum value if:

• A. r is along positive y-axis
• B. r is along positive x-axis
• C. r makes an angle of 45${}^{\circ }$ with the x-axis
• D. r is along negative y-axis

Answer 1

Answer: (B)

r is along positive x-axis

The component should be at an angle of $0^{\circ }$ from the axis given here and thus the component of the vector along x-axis will have the maximum value when r is along x-axis.