Physics 2008 JAMB Past Questions - Question 33: Convex mirrors are used as driving mirrors because images formed are

Correct Answer

A

Explanation

image formed by convex mirror is always erect, virtual and diminished.Convex mirrors are used as driving mirrors, such as side mirrors on vehicles, because they produce images that have certain useful characteristics for this specific application. The images formed by convex mirrors are:

1. Virtual: Convex mirrors produce virtual images, which means that the image appears to be behind the mirror rather than in front of it. This is helpful for drivers because it allows them to see a wider field of view, including objects and vehicles approaching from behind or from the sides.

2. Reduced in Size: Convex mirrors create smaller images of objects compared to their actual size. This reduction in image size helps to fit a broader area into the driver's field of view, which is essential for monitoring traffic and potential hazards.

3. Wide Field of View: The curvature of convex mirrors allows for a larger field of view compared to flat or concave mirrors. This wide field of view is valuable for drivers to have a better understanding of their surroundings, including vehicles approaching from the rear and the sides.

4. Minimized Blind Spots: Convex mirrors help minimize blind spots, making it easier for drivers to see vehicles or objects that might be obscured by traditional flat mirrors. This enhances safety by reducing the chances of accidents caused by hidden or rapidly approaching vehicles.

5. Reduced Glare: Convex mirrors scatter light and minimize glare from headlights of vehicles behind, which is especially helpful when driving at night.

In summary, convex mirrors are used as driving mirrors because they provide virtual, reduced-size images with a wide field of view, reducing blind spots and improving a driver's overall awareness of their surroundings, making them safer for use in vehicles.