Two diverging light rays, originating from the same point, have an angle of 5° between them. After the rays reflect from a plane mirror, what is the angle between them? Construct one possible ray diagram that supports your answer.
2 answers:
Answer:
5°
Explanation:
Two diverging light rays, originating from the same point, have an angle of 5° between them.
According to laws of reflection the angle of incidence is equal to the angle of reflection.
From the attached figure, it is clear that the after reflection from a plane mirror the angle between two rays will be 5°.
O be the originating point. m and n two diverging light rays. When they strikes at the plane mirror, the laws of reflection still fulfilled.
As a reference, consider the line from the point perpendicular to the mirror. That direction is called 'normal' to the mirror. The ray on the right leaves the point traveling 5° to the right of the normal, and leaves the mirror on a path that's 10° to the right of the normal. The ray on the left leaves the point traveling 5° to the left of the normal, and leaves the mirror on a path that's 10° to the left of the normal. The angle between the two rays after they leave the mirror is 20° . Frankly, Charlotte, if there were more than 5 points available for this answer, I'd seriously consider giving you a drawing too.
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