Duration: 8:25

1 views

0

\( \mathrm{A}, \mathrm{B} \) and \( \mathrm{C} \) are three tuning forks. Frequency of \( \mathrm{A} \)
P is \( 350 \mathrm{~Hz} \). Beats produced by \( \mathrm{A} \) and \( \mathrm{B} \) are \( 5 / \mathrm{s} \) and

W by \( B \) and \( C \) are \( 4 / \mathrm{s} \). When a wax is put on \( A \) beat frequency between \( \mathrm{A} \) and \( \mathrm{B} \) is \( 2 \mathrm{~Hz} \) and between \( \mathrm{A} \) and \( \mathrm{C} \) is \( 6 \mathrm{~Hz} \). Then, frequency of \( \mathrm{B} \) and \( \mathrm{C} \) respectively, are
(1) \( 355 \mathrm{~Hz}, 349 \mathrm{~Hz} \)
(2) \( 345 \mathrm{~Hz}, 341 \mathrm{~Hz} \)
(3) \( 355 \mathrm{~Hz}, 341 \mathrm{~Hz} \)
(4) \( 345 \mathrm{~Hz}, 349 \mathrm{~Hz} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live