Computer Science, asked by AceMaster4328, 1 day ago

Which of the following is a type of guided transmission media?
a. Radio Waves
b. Twisted Pair
c. Microwaves
d. Infrared

Answers

Answered by jadhavprabhawati1991

Answer:

The principal focus of a convex lens is a point on its principal axis to which light rays parallel to the principal axis converge after passing through the lens. The focal length is the distance of the principle focus from the optical center of a lens.

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