Working waves

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Can you name the answers to questions on working waves?

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

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