Final answer:
To draw a ray diagram for a concave mirror, you need to represent the principal axis, focal point, and center of curvature. For an object outside the focal point, the image is real and inverted. Inside the focal point, the image is virtual.
Step-by-step explanation:
When drawing ray diagrams for a concave mirror, we consider several cases based on the object's location relative to the focal point. The image formation by a concave mirror can result in a real image that is projectable onto a screen if the object is beyond the focal point, or a virtual image if it's within the focal point.
To construct a ray diagram for a concave mirror:
- Draw a principal axis.
- Place the focal point (F) and the center of curvature (C) on it.
- Position the object and draw a ray parallel to the principal axis, which then reflects through the focal point.
- Draw a ray through C, reflecting back on itself.
- Where these rays intersect is where the image is formed. If they don't intersect, extend the reflected rays backward to find a virtual image.
For objects beyond the focal point of a concave mirror, the image formed is real, inverted, and can be located by the intersection of the reflected rays as demonstrated in Figure 25.42. If an object is placed at the focal point, no image is formed as rays reflect parallel.
In the scenario with flat mirrors positioned at a 60° angle, multiple images can be formed due to repeated reflection. A ray diagram for this configuration would involve drawing rays from the object to each mirror, and then tracing reflected rays until they either exit the system or converge to form an image.