CBSE Class 10th Ch.9 | Light Reflection and Refraction| Refraction by spherical lenses |
CBSE Class 10th Ch.9 | Light Reflection and Refraction| Refraction by spherical lenses |
The refractive index of glass is higher than that of the surrounding air. Light rays passing from air to glass are obviously refracted. By using special types of spherical lenses, which are mainly convex lenses or concave lenses, the light rays passing from air to the lens, are either diverged or converged.
Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a piece of transparent glass bound by two spherical surfaces and is used to magnify objects. They are of two types convex and concave. The image produced by convex lens is enlarged and the image produced by concave lens is diminished.
Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent glass which is bounded by two spherical surfaces. The light rays are refracted after passing through the lens. It is of two types, convex lens and concave lens.
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