(a) Provide examples of intentional electromagnetic sources and examples of unintentional sources.
(b) Describe the process of the formation of lightning.
(c) Reduce each of the given signal transmission situations to a source, coupling path(s), and receptor:
(i) AM radio transmission to the human ear.
(ii) TV transmission to the human eye.
(iii) Radar target identification.
(d) What could be the impact of abnormal solar winds on the earth?
(e) Explain with the help of a pie chart the different portions of radiation and energy emanating from a nuclear explosion.