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1. A radio wave is launched at sea level with an elevation angle of 1°. The refractive index is constant at 300 N-units up to an altitude of 100 m where it abruptly decreases to 200 n-units. Using Bouger's law, calculate the new elevation angle.

2. If the refractive index decreases continuously with increasing altitude by 75 N-units per kilometer, calculate the "effective earth radius" (i.e., calculate k_eR_e).

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Reference No.:- M91990557

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