This is bit imaginary question.

Suppose a man standing in front of mirror. He can surely see his image of himself. Now suppose if the man and the mirror, both speeding with the same speed of 3x1o^8 m/s, and ignoring all other variables like temperature, heat, or pressure etc., is it possible that the man could still see his image in the mirror which is also moving with 3x10^8 m/s ?

ans:-An entity traveling at the speed of light (photon, graviton, neutrino) experiences no passage of time, that is, it is annihilated at the same subjective moment that it was created. Thus it could not 'measure' the speed of any other entity or 'notice' its mirror image. Richu1996 12:28, 16 August 2011 (UTC)