Draw a labelled ray diagram to show the formation of the image of an object placed between the pole and infinity by a convex mirror. State the properties of the image formed. Why do we prefer a convex mirror as a rear-view mirror in vehicles?
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Convex mirrors are widely used for safety purposes in vehicles and in places like shopping malls, due to their ability to offer a wide angle of view.
Step 1: Ray Diagram for a convex mirror.
Step 2: Properties of the image formed.
- The image formed by a convex mirror is virtual, erect, and diminished.
- The image is formed behind the mirror and is smaller than the object, regardless of the position of the object (between the pole and infinity).
Step 3: Why a convex mirror is preferred as a rear-view mirror in vehicles.
- Wide field of view: Convex mirrors diverge light rays, making it easier to see a wide area behind the vehicle, providing a larger field of view compared to flat or concave mirrors.
- Virtual, erect, and diminished image: The image formed is always smaller and upright, which makes it easier to view vehicles or objects behind the driver, preventing the image from being distorted.
- Safety: Since the image is smaller, the driver can see a broader area, reducing blind spots and increasing safety.
