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.
Last updated
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
1,281 free Waves MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
20 waves pass through a point in a medium in 5 seconds. What is the time required to pass one wave?
A longitudinal wave is moving through a medium. Which of the following statements about the direction of propagation of wave and displacement of the medium is true?
A point source of light placed in a homogeneous medium gives rise to ___________________?
A sound wave has a wavelength of 0.20 m. What is the phase difference between two points along the wave which are 0.65 m apart?
A sound wave has a wavelength of λ. What is the minimum possible distance between two points with a phase difference of 90˚?