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charle [14.2K]
3 years ago
14

Why do the optical signals used in optical fibre cables have avery short wavelength?​

Computers and Technology
1 answer:
guapka [62]3 years ago
3 0

Answer:

Optical signals have very high frequencies. A high frequency means a short wave length because the wave length is inversely proportional to the frequency (λ = v/f), where v is the propagation speed in the media.

Explanation:

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Explain the danger leaks pose when operating a tractor.
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Explain the steps you take to complete an Internet search. Do you use a particular search engine every time or do you alternate?
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File Letter Counter
Zanzabum

Answer:

The solution code is written in Python.

  1. fileName = input("Enter file name: ")
  2. target = input("Enter target character: ")
  3. with open(fileName, "r")as reader:
  4.    content = reader.read()
  5.    print(content.count(target))

Explanation:

Firstly, use <em>input() </em>function to prompt user for a file name. (Line 1)

Next, we use input() function again to prompt user input a target character (Line 2)

Create a reader object and user <em>read() </em>method to copy entire texts from to the variable<em> content </em>(Line 4 - 5).

At last we can get the number of times the specified character appears in the file using the Python string built-in method <em>count() </em>(Line 6)

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