Question

A plane mirror is placed at origin parallel of y- axis, facing the positive x–axis. An object starts from (2m, 0, 0) with a velocity of $(2\hat{i}+2\hat{j}$), relative velocity of image with respect to object is along

• A. Positive x – axis
• B. Negative x-axis
• C. Positive y-axis
• D. Negative y-axis

Answer 1

The correct option is B Negative x-axis



$\left|{\overrightarrow{v}}_0\right|=\left|{\overrightarrow{v}}_1\right|$
$=\sqrt{(2{)}^2+(2{)}^2}$
$=2\sqrt{2}$ m/s
Relative velocity of image with respect to object is in negative x-direction as shown in figure.