Consider telecommunication through optical fi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The characteristics of an optical fibre are as follows:$(i)$ It works on the principle of total internal reflection.$(ii)$ It consists of a core m

Vedclass · Accepted Answer

Optical fibres are subjected to electromagnetic interference from outside

Vedclass · Answer

(B) The characteristics of an optical fibre are as follows:$(i)$ It works on the principle of total internal reflection.$(ii)$ It consists of a core made of glass, silica, or plastic with a refractive index $n_1$, surrounded by a cladding with a refractive index $n_2$, where $n_1 > n_2$. The refractive index of the core can be uniform (step-index) or vary gradually (graded-index).$(iii)$ Optical fibres exhibit extremely low transmission loss.$(iv)$ Optical fibres are immune to electromagnetic interference from external electric and magnetic fields because they transmit light signals rather than electrical signals.Therefore, the statement that optical fibres are subjected to electromagnetic interference is $NOT$ true.

Consider telecommunication through optical fibres. Which of the following statements is $NOT$ true?

Similar Questions

For an amplitude-modulated wave, the audio frequency is $500 \, \text{cycles/second}$. What is the actual carrier frequency in $\text{cycles/sec}$?

The need for modulation is

$A$ message signal is used to modulate a carrier signal of frequency $5 MHz$ and peak voltage of $40 V$. In the process,two side-bands are produced separated by $40 kHz$. If the modulation index is $0.75$,then the peak voltage and frequency of the message signal,respectively,are:

The height of a $TV$ transmitter antenna is $100 \ m$. What is the area covered by the transmitter for broadcasting? $(R = 6.4 \times 10^{6} \ m)$

If $f_m$ is the modulation frequency for $FM$,then the modulation index is proportional to.....

Vedclass Test Series

Exam Paper Generator

Online Exam Module