question_answer 36)

                                                                  Electromagnetic waves with wavelength (i) is used in satellite communication. (ii) is used to kill germs in water purifier. (iii)is used to detect leakage of oil in underground pipelines. (iv) is used to improve visibility in runways during fog and mist conditions. (a) Identify and name the part of electromagnetic spectrum to which these radiations belong. (b) Arrange these wavelengths in ascending order of their magnitude. (c) Write one more application of each.

Answer:

                  (a)  - microwave,  - ultraviolet,  - X-rays,  - Infrared, (b) (c) Microwave is used in radar. UV in LASIK-eye surgery. X-ray is used to detect a fracture in bones. Infrared is used in optical communication.