a man of height H is standing in front of mirror which has been fixed on the ground. What length of his body can the man see in the mirror? The length of the mirror is H/2. ( neglect desperation between eyes and head of men)

Dears Student,
a man of height H is standing in front of mirror which has been fixed on the ground.
The whole body of length H can the man see in the mirror.

a man of height H is standing in front of mirror which has been fixed on the ground so he wcannot see his body in mirror so answer is zero

 Zero height would be  seen as light after reflection would never reach the person's eyes. His face's light after reflection would go downward not to his eyes and the extreme light i.e. of his foot after reflection would just pass over his head