MCQEasyJEE Main 2023 · 29 January, Shift 1Doppler Effect

Physics Question from JEE Main 2023 · 29 January, Shift 1

A person observes two moving trains, A reaching the station and B leaving the station with equal speed of 30 m/s30 \, \text{m/s}. If both trains emit sounds with frequency 300 Hz300 \, \text{Hz}, the approximate difference of frequencies heard by the person will be:

  • A

    33 Hz33 \, \text{Hz}

  • B

    55 Hz55 \, \text{Hz}

  • C

    80 Hz80 \, \text{Hz}

  • D

    10 Hz10 \, \text{Hz}

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