Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s,

Question

Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s,

Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity u. If the speed of sound is 340 m/s, What must be the value of u so that he hears 10 beats per second?
A. 2.0 m/s
B. 2.5 m/s
C. 3.0 m/s
D. 3.5 m/s

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Related Questions

For a certain organ pipe, three successive resonant frequencies are observed at 300 Hz. 420 Hz and 540 Hz. The speed of sound in air is 340 `ms^(-1)`,

2 Answers 4 Views

A bat emits ultrasonic sound a frequency 1000kHz in air. If the sound meets a water surface, what is the wavelength of (a) the reflected sound, (b) th

2 Answers 4 Views

A metre- long tube open at one end,with a movable pistonat the other end, shows resonance with a fixed frequency source(a tuning fork of frequency 340

2 Answers 4 Views

The speed of sound in air and water is 340 m/s and 1420 m/s respectively. If sound waves have a wavelength of 2m in air, then the frequency of the sam

2 Answers 5 Views

The velocity of sound in air when temperature is halved and pressure doubled will be (The velocity of sound in air at NTP is 330 m/s)

2 Answers 6 Views

A man standing at a certain distance blows a horn towards a big wall. He hears the echo after 2s, if the velocity of sound in air is 340 m/s, then the

2 Answers 4 Views

A bat emits ultrasonic waves of frequency 39 kHz and receives and echo 0.2 s later. If the speed of sound in air is 300 m/s and the speed of electro m

2 Answers 4 Views

If the frequency of two sources of sound are 512 Hz and 516 Hz then the time interval between two consecutive beats produced by sounding them together

2 Answers 4 Views

Two sound waves each of frequency 500Hz are travelling along the same line in opposite direction . If the speed of sound in air is 350 m/s. find the d

2 Answers 4 Views

Speed of sound is air is 340 m/s. The length of air column is 34 cm. The frequency of `5^(th)` overtone of pipe closed at one end is

2 Answers 6 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`n_(1) = n [(v + v_(0))/(v)] and n_(2) = n [(v- v_(0))/(v)]`
`n = n_(1) - n_(2) = (v)/(v) [v + v_(0) -v + v_(0)]`
`10 = (680)/(340) [2v_(0)]`
`v_(0) = (10)/(4) = 2.5 m//s`

4 views Answered 2023-02-05 15:29