Question

What is the use of semi circular glass disc experimentally?​

Answer 1

Answer:

A semi circular prism is used because if you aim for the centre of the circle it crosses the outside at 90o (the normal to the interface) and therefore does not get deviated. This has the advantage of very little energy loss as the light (or other em radiation) is transmitted along the fibre optic tube.

Answer 2

xxnxjxnsnxkxjxkckcmvk kkvkvkvfkcn