A man standing in front of a vertical wall at a certain distance beats a drum at regular interva...

Channel:
PW Solutions
Subscribers:
451,000
Published on ● Video Link: https://www.youtube.com/watch?v=svxrFARuBWw


Duration: 5:50
4 views
0

A man standing in front of a vertical wall at a certain distance beats a drum at regular intervals. The drumming rate is gradually increased and he
\( P \) finds that the echo is not heard distinctly when

W the drumming rate becomes 2 beats in 3 seconds.
He then moves nearer to the wall by \( 90 \mathrm{~m} \) and finds the echo is again not heard when the drumming rate becomes 1 per second. From this data, the velocity of sound must be
(1) \( 330 \mathrm{~m} / \mathrm{s} \)
(2) \( 340 \mathrm{~m} / \mathrm{s} \)
(3) \( 360 \mathrm{~m} / \mathrm{s} \)
(4) \( 180 \mathrm{~m} / \mathrm{s} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-01-16The frequency of tuning fork \( \mathrm{A} \) is \( 2 \% \) more than the frequency of a standar...
2023-01-16Two tuning forks A and B produce 8 beats/ s when sounded together. A gas column \( 37.5 \) \( \m...
2023-01-16Column I Column II (A) Tuning fork \( \mathrm{A} \) of frequency (P) \( 128 \mathrm{~Hz} \) \( P...
2023-01-16Four tuning forks of frequencies \( 200,201,204 \) and \( 206 \mathrm{~Hz} \) are sounded togeth...
2023-01-16Consider an interference pattern between two coherent sources. If \( I_{1} \) and \( I_{2} \) be...
2023-01-16You are given four tuning forks, the lowest frequency of the forks is \( 300 \mathrm{~Hz} \). By...
2023-01-16In a standing wave formed as a result of reflection from a surface, the ratio of the amplitude a...
2023-01-16The three identical loud speakers in figure play a \( 170 \mathrm{~Hz} \) frequency tone in a ro...
2023-01-16Two sitar strings, A and B, playing the note Dha are slightly out of tune and produce beats of \...
2023-01-16A tuning fork of frequency \( 480 \mathrm{~Hz} \) is used to vibrate a sonometer wire having nat...
2023-01-16A man standing in front of a vertical wall at a certain distance beats a drum at regular interva...
2023-01-16Two radio station that are \( 250 \mathrm{~m} \) apart emit radio waves of wavelength \( 100 \ma...
2023-01-16Two open organ pipes of fundamental frequencies \( \mathrm{n}_{1} \) and \( \mathrm{n}_{2} \) ar...
2023-01-16At \( \mathrm{t}=0 \), a transverse wave pulse travelling in the positive \( \mathrm{x} \) direc...
2023-01-16It is found that an increase in pressure of \( 100 \mathrm{kPa} \) causes a certain volume of wa...
2023-01-16A girl stands \( 130 \mathrm{~m} \) away from a high wall. She claps her hands together at a ste...
2023-01-16A transverse wave is passing through a stretched string with a speed of \( 20 \mathrm{~m} / \mat...
2023-01-16A string of mass \( 2.5 \mathrm{~kg} \) under some tension. The length of the stretched string i...
2023-01-16The transverse displacement of a string (clamped at its both ends) is given by \( \mathrm{P} \) ...
2023-01-16If the actual frequency of source is \( f \) and actual wavelength is \( \lambda \) and velocity...
2023-01-16A \( 43 \mathrm{~m} \) long rope of mass \( 5.0 \mathrm{~kg} \) joins two rock climbers. One cli...