by Rajan Gupta | Aug 24, 2020 | Refraction
The refractive index of a medium may be defined as the ratio of the speed of light in air (or vacuum) to the speed of light in the medium. Thus, Refractive index = The refractive index of a medium has no units and it is represented by the...
by Rajan Gupta | Aug 24, 2020 | Refraction
Following are the rules for getting the direction of bending of a ray of light. Rule 1 When a ray of light goes from an optically rarer medium to an optically denser medium, it bends towards the normal. In this case the angle of refraction will be smaller than the...
by Rajan Gupta | Aug 24, 2020 | Refraction
Angle of Incidence To get the angle of incidence, first draw a normal NON’ perpendicular at the point O. Now, the angle of incidence may be defined as the angle between the incident ray and normal at the point of incidence. It is represented by letter ‘i’. Angle of...
by Rajan Gupta | Aug 24, 2020 | Refraction
The refraction of light may be defined as the phenomenon of change in direction of light, when it passes from one medium to another. The cause for refraction of light when it passes through one medium to another is the difference of velocity of light in different...
by Rajan Gupta | Aug 24, 2020 | Reflection
The linear magnification or magnification of a spherical mirror may be defined as the ratio of the size (height) of the image to the size (height) of the object. The magnification of a mirror is represented by the letter m. Thus m = Or m = where, h2 =...
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