Question

Which of the following is based on the phenomenon of total internal reflection of light?
(a) Sparkling of diamond
(b) Optical fibre communication
(c) Instrument used by doctors for endocopy (d) All of the above​

Answer 1

Answer:

(b) Optical fibre communication

Answer 2

(d) All of the above

• when a light ray travelling from denser medium to rarer medium is incident at the surface of two medium at an angle greater than the critical angle of the two surfaces or media the ray is totally reflected back to the denser medium this phenomenon is called total internal reflection.

• Sparkling of diamond :- Diamond achieves there brilliance by total internal reflection. Depending upon the cut of diamond light ray enters and reflects inside the diamond.

• Optical fibre communication :- Optical Fibre consists of three main parts of core , cladding and buffer coating.
• The working is the light is incident on end of the fibre of small angle it goes inside and suffers repeated total internal reflection .

• Instrument used by doctors for endocopy :- In the process of endoscopy Optical Fibre is used for obtaining the images of internal body parts.

So the correct answer is (d) All of the above