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12th Notes

Optical fibres

In this topic we will discuss what is optical fibre , what is its working and its important application. Optical fibres – It is a device based on Total internal reflection by which signal may be transmitted from one location to another. It is a thin fibre of plastic specially coated glass , in which […]

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12th Notes

Application of Total internal reflection

Application of total internal reflection ( T.I.R) –  T.I.R in nature and its technological application- Brilliance of diamond-   The brilliance of diamond is due to the total internal reflection of light. Refractive index for diamond is very large which is near about 2.42 , so that critical angle for diamond air is 24.40. The diamond […]