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JEE Main & Advanced JEE Main Paper (Held On 9 April 2014)

  • question_answer
    A transmitting antenna at the top of a tower has height 32 m and height of the receiving antenna is 50 m. What is the maximum distance between them for satisfactory communication in line of sight (LOS) mode?   [JEE Main Online Paper ( Held On 09 Apirl  2014  )

    A) 55.4 km                               

    B) 45.5 km

    C) 54.5 km                               

    D) 455 km

    Correct Answer: B

    Solution :

                    Given : \[{{h}_{R}}=32m\] \[{{h}_{T}}=50m\] Maximum distance, dM= ? Applying, \[{{d}_{M}}=\sqrt{2R{{h}_{T}}}+\sqrt{2R{{h}_{R}}}\] \[=\sqrt{2\times 6.4\times {{10}^{6}}\times 50}+\sqrt{2\times 6.4\times {{10}^{6}}\times 32}=45.5km\]


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