2. How does the transmission of radio wave occurs?

18.a. How does dispersion affect light pulses in an optical fiber? A. It causes total internal reflection. B. It can cause pulses to be indistinguishable. C. It causes pulses to die off as they travel down a fiber. D. It causes pulses to increase in power as they travel down a fiber. 18.b. Which of the following frequency bands do single-mode optical fibers use for communication? A. L B. C C. S 18.c. What type of cable is presently used to route phone and internet service to homes? A. Patch B. Fiber optic C. Twisted copper D. Coaxial

*2. If a 1500-kHz radio wave is modulated by a 2-kHz sine-wave tone, what frequencies are con- tained in the modulated wave (the actual AM signal)?

If the reflection coefficient is 0.75, estimate the return loss for the device