A bus is moving with a velocity of 5 m / s towards a huge wall. The driver sounds a horn off fr

step 1 Hello everyone in this question we'll be understanding some basic concepts of the oscillation. T

A bus is moving with a velocity of 5 m / s towards a huge...

A bus is moving with a velocity of $5 \mathrm{~m} / \mathrm{s}$ towards a huge wall. The driver sounds a horn off frequency $165 \mathrm{~Hz}$. If the speed of sound in air is $335 \mathrm{~m} / \mathrm{s}$, the number of beats heard per second by the passengers in the bus will be........ (A) 3 (B) 4 (C) 5 (D) 6 A vehicle with a horn of frequency $\mathrm{n}$ is moving with a velocity

A bus is moving with a velocity of $5 \mathrm{~m} / \mathrm{s}$ towards a huge wall. The driver sounds a horn off frequency $165 \mathrm{~Hz}$. If the speed of sound in air is $335 \mathrm{~m} / \mathrm{s}$, the number of beats heard per second by the passengers in the bus will be........
(A) 3
(B) 4
(C) 5
(D) 6 A vehicle with a horn of frequency $\mathrm{n}$ is moving with a velocity

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Sound Reflection

Sound Reflection involves the bouncing back of sound waves when they encounter a surface, such as a wall. The reflected sound retains the frequency of the original sound as modified by phenomena like the Doppler Effect during the initial transmission, and when it is further evaluated by a moving observer, additional Doppler shifts can occur upon reception of the reflected wave.

Beat Frequency

Beat Frequency occurs when two waves of slightly different frequencies interfere with one another, resulting in a phenomenon where the amplitude of the combined waves fluctuates at a rate equal to the absolute difference between the two frequencies. In cases involving sound, this difference is heard as beats, providing an audible measure of the frequency discrepancy between the two interfering sound waves.

Doppler Effect

The Doppler Effect describes the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source. In acoustics, when either the source or observer (or both) is in motion, the frequency perceived by the observer is shifted from the frequency emitted by the source. This principle applies to scenarios involving moving vehicles, such as a bus approaching a wall, where the sound’s frequency increases for an observer moving towards the sound source.

Please give Ace some feedback