Question

plzz answer the question fast​

Answer 1

Answer:

c. 2000 is the answer

Explanation:

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Answer 2

Answer:

Explanation:

Each cable contains incredibly thin strands of glass or plastic: optical fibers. Each cable can be made up of as few as two strands or as many as several hundred. The strands, each only one-tenth the width of a human hair, are capable of transmitting around 25,00 telephone calls each. So, a cable made of hundreds of strands has the capacity to carry millions of calls.

The light bounces back and forth off the walls of the cable pipe. Each photon (light particle) bounces down the pipe like a bobsled on an ice track. While you might expect the light to leak through the edges of a glass pipe, the light is directed at shallow angles (no more than 42 degrees), which reflects it back into the pipe. This is known as total internal reflection.

The cable also keeps light in the pipe. The core of the cable is the bit the light travels through. A second layer of glass, called cladding, is wrapped around the outside of the core. The cladding keeps the light signals inside the core.

Now, not all fiber optic cables are the same. There are several modes that help the light travel in different ways.