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KEAM 2015 Physics and Chemistry Paper

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Question : 12

Total: 120

A ground receiver receives a signal at 5 MHz, transmitted by a ground transmitter at a height of 320 m, which is 110 km away from it. Then it can communicate through (radius of earth R = 6400 km)

space waves
ground waves
ground waves
both sky and ground waves
sky waves, ground waves and space waves

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