question_answer

If an observer is walking away from the plane mirror with \[6m/sec.\] Then the velocity of the image with respect to observer will be                                                             [RPMT 1999]

A)            \[6m/sec\]                            

B)            \[-\,6m/sec\]

C)            \[12m/sec\]                         

D)            \[3m/sec\]

Correct Answer: C

Solution :

                   Relative velocity of image \[w.r.t.\] object                    \[=6-(-6)=12\,m/\sec \]