Light :
Light is one of the beautiful but lengthiest chapter of physics in 10th CBSE syllabus. Students often get confused how to study this chapter. In this blog I'm going to give you some ideas to study this chapter more effectively.
Lets brighten our future with light...
The light chapter can be divided into following parts
1. Theory
2. Ray diagrams
3. Formulae based questions.
If you could separate things in these categories then you can start studying each part one by one
# Laws- laws of reflection,
-laws of refraction.
# Definitions-
- center of curvature
- pole
- principle axis
- principle focus
- focal length
- aperture
- refraction
- refractive index ( relative)
- absolute refractive index
- power of lens.
- one diopter.
-for lenses.
# Characteristics of image formed by plane mirror.
# Uses of both types of lenses and mirrors.
# Difference between real image and virtual image
Ray diagrams :
To draw ray diagram correctly one should remember table of image formation by both mirrors and both lenses. IMP diagrams are as follows
- Ray diagrams of concave and convex mirrors (8)
- Ray diagram of refraction of light by glass slab.(8)
- Ray diagrams of concave and convex lenses.(1)
- formulae for mirror ( mirror's formula, magnification)
- formula for lens ( lenses formula, magnification)
- power of the lens.
- refractive index.
