Right answer is 7. Lett lines of intersection of roofs and walls be positive x, y and z axis. Let the object is placed at (1,1,1) then images will be formed at (-1,1,1) (1,-1,1) (1,-1,1) (-1,-1,1) (1,-1,-1) (-1,1,-1) (-1,-1,-1)
Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
Moderation Team
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