Working waves

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Can you name the answers to questions on working waves?

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

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