Physics: Concave Mirrors

What is a Concave Mirror?

Concave mirrors are used in reflecting telescopes, catadioptric lens systems, headlamps, automobile headlights, solar cookers, shaving/cosmetic mirrors, and spotlights (like the bat signal in the batman movies/episodes).

Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance greater than a focal length from the mirror’s surface. Which is 10. The image of an object is found to be upright and reduced in size.


I chose concave mirrors as my key learning point because I believe that many people need to know the difference between concave and convex and that concaves are mostly made up of everything we use.

Real Life Situation/Application:

The concave mirror is a converging mirror which is used for many purposes. It is used as a torch to reflect the light, it is used in the aircraft landing at the airports to guide the airplanes, and it is used in shaving to get an enlarged and erect image of the face. Also, the concave mirror is used in front lights of cars to reflect the light, it is used in marine lighthouses that are found at the marine ports, at the to guide the ships and it is used in the solar ovens. The concave mirror is used in the solar ovens and the solar furnaces to collect a large amount of solar energy in the focus of the mirror for cooking food, heating water, recharging power backups or melting metals respectively. Concave mirrors are used in satellite dishes, they are used in telescopes, dentist and ENT doctors use them to obtain a larger image than the original of the teeth, ear or skin etc. Concave mirrors are used in the electron microscopes and magnifying glasses, and they are used in the visual bomb detectors and they are used in the flash light mirror of camera. These are all my real life situations/applications.


The two websites that I used that help explain and demonstrates my kay learning point is and I picked these two websites because they both give clear definitions and understanding of what concave mirrors are and how they are very different from convex mirrors. These websites also give lots of diagrams of how they work and how to do them.


The book I used is called the SCHOTT begins manufacturing primary mirrors for ELT from gale. I chose this book because it gives clear understanding to the topic and it also gives some definitions to some stuff.



Obscure, blissful,

Thrilling, studying, living,

Science governs entire cosmos,


Work Cited and Consulted