Two trains \( \mathrm{A} \) and \( \mathrm{B} \) are moving in the same direction with velocitie....

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Question Two trains \( \mathrm{A} \) and \( \mathrm{B} \) are moving in the same direction with velocities \( 30 \mathrm{~m} / \mathrm{s} \) and \( 10 \mathrm{~m} / \mathrm{s} \) respectively. \( B \) is behind from \( \mathrm{A} \) and \( \mathrm{A} \) blows a horn of frequency 450 \( \mathrm{Hz} \). Then the apparent frequency heard by observer on train \( \mathrm{B} \) is (speed of sound is \( 330 \mathrm{~m} / \mathrm{s} \) ):
(A) \( 425 \mathrm{~Hz} \)
(B) \( 300 \mathrm{~Hz} \)
(C) \( 450 \mathrm{~Hz} \)
(D) \( 350 \mathrm{~Hz} \)📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live



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