Dispersion of light :- Dispersion of light is the phenomenon of splitting of a beam of white light into its […]
Dispersion by a prism :- When white light ( Sun light ) is incident on a glass prism, the emergent
Angle of deviation ( δ ) :- The passes of light through a triangular prism ABC, The angles of incidence
Equivalent focal length of two lenses :- Let us consider two lenses L₁ ( focal length f₁ ) and L₂
Let us consider two lenses A anb B of focal length f₁ and f₂ placed in contact with each other.
Refraction of light at a convex surface :- 1. For real image :- The figure shows the geometry of formation
Twinkling of stars :- it is is a phenomenon of atmospheric refraction. Stars do not really twinkle they just appear
Total internal reflection :- when light travels from and optically denser medium to rarer medium at the interface, it is
Refraction of light :- when a beam of light encounters another transparent medium, a part of light gets reflected back
The mirror equation :- The ray diagram shows the image A’B’ of an object AB formed by a concave mirror
Consider a ray parallel to the principal axis strinking the mirror at M, CM will be perpendicular to the mirror
Definitions regarding spherical mirrors. Pole :- The geometric centre of a spherical mirror is called its pole. Denoted by ‘P’
