useful rays to draw ray diagrams
Answers
Answer:
This is the answer for this question.
Explanation:
A ray diagram is a representation of the possible paths light can take to get from one place to another. This is often from a source or object to an observer or screen. There are a few important things to note:
Light travels in straight lines within a uniform medium (this means that light can change direction upon entering a different medium)
Light has a direction of travel, it is often useful to indicate this with an arrow on your ray
A sharp real image (an image that can be displayed on a screen) is formed when all rays from one point on an object arrive at a unique point on the image
A sharp virtual image (an image that you cannot display on a screen) is formed when all of the rays from one point on an object all "appear" to have come from one unique point on the image i.e. a straight line tracing back along their direction will always pass through this point.
For situations involving multiple lenses or mirrors, the image formed from one of these components can act as the object for another one.
Aside from these points, when drawing ray diagrams, there are usually an infinite number of rays that can be drawn. It is useful to know which are the best rays to choose in different cases.