Advertisements
Advertisements
Question
What is a stethoscope ? Name the principle on which a stethoscope works.
Solution
Stethoscope is a medical instrument used by doctors to listen to the sounds produced within the human body, mainly in the heart and lungs. It works on the principle of multiple reflections of sound.
APPEARS IN
RELATED QUESTIONS
A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
1) Calculate the speed with which this sound travels
2) What difference would be felt by a listener between the above sound and another sound traveling at the same speed, but of wavelength 2.6 m?
A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which does not change.
What are infrasonic waves?
A cork piece is floating on the surface of the water in a pond. A piece of pebble is dropped into the water. What will be your observation?
When a sound is made from a distance of 18 m, in front of a tall building, it is found to get repeated again. Which phenomenon is associated with this observation? Give a brief explanation of this phenomenon?
A sound wavelength of 0.332 m has a time period of 10−3 s. If the time period is decreased to 10−4 s, calculate the wavelength and frequency of the new wave.
Explain reflection at the boundary of a rarer medium.
