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A man of height H is standing in front ...

A man of height H is standing in front of an inclined plane mirror at an angle `theta` from horizontal. The vertical separation between man and inclined plane is x. Man can see its complete image in length `(H(H+x)"sin"theta)/(H +2x)` of mirror .
(Given : x = H = 1m and `theta = 45^(@)`)

If man starts moving with velocity `1 ms^(-1)` horizontally, find out length of mirror at t=1s in which he can see his complete image.

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