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

  • question_answer
    The maximum range \[{{d}_{\max }},\] of radar is

    A) proportional to the cube root of the peak transmitted power

    B) proportional to the fourth root of the peak transmitted power

    C) proportional to the square root of the peak transmitted power

    D) Not related to the peak transmitted power at all

    Correct Answer: B

    Solution :

    [b] Maximum Range of the radar is given by \[{{R}_{\max }}={{\left( \frac{{{P}_{t}}{{A}^{2}}S}{4\pi {{\lambda }^{2}}{{P}_{\min }}} \right)}^{1/4}}\] Where \[{{P}_{t}}:\]peak value of transmitted power A: caputre area of the receiving antenna S: radar cross-sectional area X: wavelength of RADAR wave \[\lambda \] : minimum receivable power of the receiver


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