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Two towers on top of two hills are 40 km apart. The line joiningthem passes 50 m above a hill halfway between the towers. What isthe longest wavelength of radio waves, which can be sent betweenthe towers without appreciable diffraction effects?

Answer» Two towers on top of two hills are 40 km apart. The line joiningthem passes 50 m above a hill halfway between the towers. What isthe longest wavelength of radio waves, which can be sent betweenthe towers without appreciable diffraction effects?


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