JEE Main & Advanced Physics Communication System / संचार तंत्र Question Bank Self Evaluation Test - Communication System

  • question_answer
    Television signals on earth cannot be received at distances greater than 100 km from the transmission station. The reason behind this is that

    A) the receiver antenna is unable to detect the signal at a disance greater than 100 km

    B) the TV programme consists of both audio and video signals

    C) the TV signals are less powerful than radio signals

    D) the surface of earth is curved like a sphere

    Correct Answer: D

    Solution :

    [d] Due to the finite curvature of the earth, the waves cannot be received beyond the tangent points on the curve.


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