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| 1. |
Two waves A and B of frequencies 2MHz and 3MHz respectively are beamed in the same direction for communication via sky wave. Which one of these likely to travel longer distance in the ionosphere before suffering total internal reflection ? |
| Answer» Solution :With increases in frequency, refractive index of a medium also increases. For higher frequency waves, angle of REFRACTION is LESS (i.e., bending of wave inmedium BECOMES less). So, condition for total internal REFLECTION is attained after travelling greater distance by higher frequency 3MHZ) | |