A plane mirror is placed at origin parallel of y- axis, facing the positive x

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^i + 2^j

), relative velocity of image with respect to object is along

Options:

A . Positive x – axis

B . Negative x-axis

C . Positive y-axis

D . Negative y-axis

Answer: Option B
:
B

| {⃗ v}_{0} | = | {⃗ v}_{1} |

= \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.

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