Q. Consider the following statements:
1.Optical fibers transmit data using electrical pulses, which makes them immune to electromagnetic interference.
2.Total Internal Reflection occurs when light traveling in a rarer medium strikes the boundary of a denser medium at an angle less than the critical angle.
3.In optical fibers, light is reflected back into the denser medium (glass/plastic) allowing it to travel long distances with minimal loss.
Which of the statements given above are correct?
Answer: A
Notes:
Explanation:
- Statement 1 is incorrect: They use light pulses, not electrical pulses.
- Statement 2 is incorrect: TIR occurs when light moves from a denser medium to a rarer medium (like glass to air) and the angle of incidence is greater than the critical angle.
- Statement 3 is correct: This is how data is guided through the fiber core.
