. . .
When light travels from one transparent medium to another transparent medium, it bends from its original path. This phenomenon of bending of light is called refraction. Refraction i.e. bending of light takes place at the boundary of separation of the two media. Whenever light travels from a rarer medium to a denser medium, . . .
A concave mirror is used in the following ways: 1. It is used as a shaving mirror. 2. It is used as a reflector in torches, lighthouses etc.. 3. A dentist uses a concave mirror to obtain a magnified image of the teeth of the patient. 4. In astronomical telescopes, it is used to view magnified images of heavenly bodies. . . .
A convex mirror is used in the following ways: 1. As a rear view mirror in vehicles such a car, bus and truck. 2. In shopping complexes an d large shops to keep an eye on customers and shoplifters. . . .
The human eye has an inbuilt convex lens. When the rays of light fall on the eye lens, it focuses a real and inverted image on the retina, which acts as a screen. The retina is connected to the optic nerves that carry the information to the brain. The brain then interprets the information and form s a real and erect image of the object with the correct . . .