Working waves

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Can you name the answers to questions on working waves?

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Question
What are optical fibres made from?
Which type of optical fibre has a sudden change in the refractive index?
Give an example of a longitudinal wave
Which type of optical fibre is used in short distance data?
Convert 20 ns into seconds
Which type of optical fibre is used in long distance data transmissions?
A remote control uses _________ radiation
What is the speed of light in m/s?
What is the approximate range of wavelengths for visible light
Question
Gamma waves have a ________ frequency
What is core diameter of monomode fibre?
What is the electromagnetic wave with the lowest frequency?
What is core diameter of step index fibre?
What is frequency measured in?
What type of waves are electromagnetic waves?
All objects emit
Radiowaves have a _________ wavelength
Which type of optical fibre has a gradual chnage in refractive index?

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