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JEE Main & Advanced Sample Paper JEE Main Sample Paper-33

  • question_answer
    If the TV - Telecast is to cover a radius of 120 km then the height of the transmitting antenna is (Use radius of the earth \[{{R}_{e}}=\text{ }6400\]km)

    A)  1900 m       

    B)                     1125 m

    C)  900 m        

    D)                     80 m

    Correct Answer: B

    Solution :

    \[r=\sqrt{2hR}\]             \[h=\frac{{{r}^{2}}}{2R}\,=1125\,m\]


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