How far below the top edge does the ray strike the mirror?

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SUMMARY

The discussion focuses on determining the point where a light ray strikes a mirror in a physics problem. Participants suggest using the law of reflection, which states that the angle of incidence equals the angle of reflection, to find the exact point of impact. Additionally, they recommend drawing the image of the light ray to visualize the reflection better. The conversation emphasizes the importance of marking the point of intersection accurately for clarity in the solution.

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Homework Statement


A light ray leaves point A in the figure, reflects from the mirror, and reaches point B. (Intro 1 figure) figure attached

How far below the top edge does the ray strike the mirror?

Homework Equations





The Attempt at a Solution



im not sure exactly where it says to mark?
 

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rayhan619 said:
How far below the top edge does the ray strike the mirror?

im not sure exactly where it says to mark?

Hi rayhan619! :smile:

You have to mark the point where the light hits the mirror …

either use a theorem about reflection angles,

or draw the image of one and join it to the other. :wink:
 

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