A person is standing in the middle of the room a mirror is kept in front of him if you want to see the wall behind in completely then what should be the minimum length of the plane mirror with respect to the wall size
Answers
mathematics
I'm in tenth standard. This is a higher-order-thinking-skills Q I found in a book. One is supposed to use laws of reflection (∠i=∠r). You can also use mathematical concepts like similarity and trigonometry.
You are in the centre of a room (I assume cuboidal). There is a plane mirror hanging on one wall. If your eyes are h distance from the ground, what is the minimum height of the plane mirror required to see the entire wall behind you.
Initially, I didn't get the answer. The answer in the book says h/2.
Then I came up with a solution that said:
Mirror height=Wall height3
and I thought that the mirror height was independent of h.
What is the answer?
I just had a thought. Maybe we are allowed to turn the mirror to an angle. But that is not clearly specified and I don't know how it would benefit us