Question

Which type of mirror is used in the rearview mirror of vehicles and why?

Hint:

"Objects in the mirror are closer than they appear" is written on convex mirrors because the diminished image makes objects look farther away.

Answer 1

Step 1: Understanding the Concept:
A rearview mirror must allow the driver to see as much of the road behind them as possible, and the images must be upright to avoid confusion.

Step 2: Detailed Explanation:
Convex mirrors are used in vehicles.
The reasons are:
1. A convex mirror always forms an erect (upright) and virtual image, regardless of the distance of the object (the vehicle behind).
2. The image formed is always diminished (smaller than the object).
Because the images are smaller, more objects can fit into the mirror's view, giving the driver a much wider field of view compared to a plane mirror.

Step 3: Final Answer:
A convex mirror is used to get a wider, erect view of traffic behind.