Question:

Pick out the correct statements about optical fibres from the following

S1: Optical fibres are used for the transmission of optical signals only.
S2: Optical fibres are used for transmitting and receiving electrical signals
S3: The intensity of light signals sent through optical fibres suffer very small loss
S4: Optical fibres effectively employ the principle of multiple total internal reflections
S5: Optical fibres are glass fibres coated with a thin layer of a material with lower refractive index

 

Options :

  • (a) S1 and S2
  • (b) S2 and S3
  • (c) S3 and S4
  • (d) S2, S3, S4 and S5

Answer :

(d) S2, S3, S4 and S5

Answer Steps :

Video Tutorial