The information received at the other end of a fibre can be inaccurate due to of the light signal.
Correct answer: D. Dispersion or Spreading
- A. Longer wavelengths
- B. Frequency
- C. Intensity
- D. Dispersion or Spreading
Explanation
Explanation:Dispersion is a phenomenon in which the different wavelengths of light travel at different speeds through a fibre, causing the light pulses to spread out over time and space. This can result in overlapping of adjacent pulses, causing information loss and inaccuracies. This option is not correct because longer wavelengths generally suffer less from dispersion than shorter wavelengths.This option is also incorrect because the frequency of the light signal does not directly affect the dispersion of the signal in the fibre. This option is also incorrect because the intensity of the light signal can be amplified or attenuated by optical amplifiers or attenuators, but it does not directly affect the dispersion of the signal in the fibre.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Progressive Waves
Progressive waves transfer energy through a medium or space while particles oscillate about their equilibrium positions. The work includes amplitude, wavelength, frequency, period, phase difference, wave speed and the progressive wave equation, while distinguishing travelling waves from stationary waves, where the pattern has fixed nodes and antinodes.
Practise Waves
1,289 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Progressive Waves questions
What is it that we use to calculate the speeds of distant stars and galaxies?
Transverse waves cannot be setup in _.
When a transverse wave, travelling in a rarer medium, encounters a denser medium, it _:
When the source of sound moves towards the stationary observer, the value of apparent frequency 'fo' is:
The audible frequency range for human hearing lies in the range:
An ocean wave has an amplitude of 2.5m weather condition suddenly changes such that the wave has an amplitude of 5.0m the amount of energy transported by the is;