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If the height of a television tower is 300 m, how far would the TV transmission be possible? (Given, the radius of earth = 6400 km )

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Given the height of tower, h = 300 m
Radius of earth, R = 6400 km = `6.4 xx 10^(6)` m,
`therefore` The required distance,
d = `sqrt(2Rh)`
` = sqrt(2 xx 6.4 xx 10^(6) xx 300 ) = 6.2 xx 10^(4) m = 62 km`
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CHHAYA PUBLICATION-COMMUNICATION STSTEM-CBSE SCANNER
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