Advertisements
Advertisements
प्रश्न
A whistle giving out a sound of frequency 450 Hz, approaches a stationary observer at a speed of 33 ms–1. The frequency heard by the observer is (speed of sound = 330 ms–1) ______.
उत्तर
Data:
v = 330 ms-1
vS = 33 ms-1
n = 450 Hz
n’ =?
Apparent frequency
n' = `("v"/("v"-"v"_s))` n
= `(330/(330-33))xx`450 = 1.11 x 450
n' = 500 Hz.
APPEARS IN
संबंधित प्रश्न
The frequency, which is audible to the human ear is
If a sound wave travels with a frequency of 1.25 × 104 Hz at 344 ms–1, the wavelength will be
What is the audible range of frequency?
What will be the frequency sound having 0.20 m as its wavelength, when it travels with a speed of 331 ms–1?
A sound wave has a frequency of 200 Hz and a speed of 400 ms–1 in a medium. Find the wavelength of the sound wave.
A person who is sitting at a distance of 400 m from a source of sound is listening to a sound of 600 Hz. Find the time period between successive compressions from the source?
