The minimum length of a mirror required for a man of height 2h to see the wall behind him in a room of length 6h and wall height 4h is (4/3)h. The solution involves geometric principles, specifically the properties of similar triangles. By positioning the viewer at the midpoint of the room and analyzing the reflection path, the necessary calculations yield the mirror length. The derived formula confirms that the mirror must extend to (4/3)h to ensure full visibility of the wall.
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Lakshya said:A man of height 2h stands in the middle of a room of length 6h. The height of a wall is 4h. What is the minimum length of a mirror to be placed on the wall in front of the man so that he can see the entire wall behind him?
The question is clear as it is. By the way, the answer is (4/3)h. I want the solution.LowlyPion said:What is your approach to the problem? What conditions have to be met?
Lakshya said:The question is clear as it is. By the way, the answer is (4/3)h. I want the solution.
LowlyPion said:Forum rules are you will have to find the solution yourself.
I was offering to help. If you need help, you can explain what you've done.
As to the answer, I already had that.
Lakshya said:Yes, I need help. Tell me how to solve this problem. I don't know even a bit how to solve it.