At what speed should a source of sound move away from a stationary obs – InterviewSolution

InterviewSolution

1.	At what speed should a source of sound move away from a stationary observer so that observer finds the apparent frequency equal to half of the original frequency?
Answer» SOLUTION :When the source is moving away from the stationary listener, the expression for the APPARENT frequency is `n.=((v)/(v+v_(s)))n` `(n)/(2)=((v)/(v+v_(s)))n` `v_(s)=v`

Discussion

No Comment Found

Related InterviewSolutions

What is the reason for the twinkling of stars ?
The change in magnetic field lines in a coil is the cause of induced electric current in it.Name the underlying phenomenon.
Say True or False.The mass of the Earth is 6.4xx10^(6)kg.
Whichof the follwing property of a proton can changewhileit moves freelyin a mageticfield ? (There may be more thanone correct answer).
When an object is placed infront of a spherical mirror at a distance 30 cm, the magnification is -1. Illustrate the conclusions.
Does the frequency of sound waes depend on the medium in which it travels?
The relation between N (no. of molecules), P,V. & T is ...........
What is magnification of a lens ?
A person is said to be colour blind if he/ she has deficiency of rod shaped cells in retina of his eyes.
"___________" prepares the 'Red List' that contains the names of endangered species from different countries.