Light

Light

form of energy
1. lateral inversion
  1. rectilinear propagation
    1. light travels in a straight line
  2. sides are interchanged, the image does not appear upside down.
types of mirrors
1. plane mirror
  1. convex mirrors
    1. concave mirrors
      1. It can either be real or virtual.
      2. It can either be inverted or erect.
      3. It can have the same size as that of the object, a larger size that of the object or smaller size than that of the object.
      4. Satellite dishes , Dentists use a concave mirror, Shaving Mirrors
    2. It is always virtual.
    3. It is always upright .
    4. It is smaller in size as that of the object
    5. The rear view mirrors are convex mirrors as they provide a wider view of the road behind.
types of lenses
1. concave lenses
  1. convex lenses
    1. A Convex Lens is curved outwards. It is thicker in the centre and narrows down at the edges. It merges the light rays passing through it at a certain point. Therefore, it is also called a Converging Lens.
      1. real, inverted ,the image is large when close to the lens
  2. A Concave Lens is curved inwards. It has wider edges and a thinner centre. It reflects back the light that travels through it in different directions. Therefore, it is also called a Diverging Lens.
    1. virtual ,erect ,small
2. A lens is a part of a reflecting material like glass or plastic but curved from both sides
reflection of light
1. refraction of light
  1. dispersion of light
    1. splitting white light into a spectrum of colors after passing through different mediums
  2. bending of light after touching two mediums
2. Light falls on the surface of an object and the object sends the light back.

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	Created by Ishika Jain over 2 years ago