Astep-index multimode glass fibre, with a core diameter of 50 μm and cladding refractive index of 1.45, is designed to limit the intermodal dispersion to 10ns/km.
a. find its acceptance angle
b. calculate the maximum bit rate for transmission over a distance of 20 km.

When you turn on a battery-operated device, an electrical circuit is

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain