v) A sound wave of wavelength 4 cm travels with a speed of 360 m/s. Find its frequency. Q.2) Explain the sonography technique performed on human beings? Q.3) What is reverberation? Q.4) Draw a neat labelled diagram of SONAR TECHNIQUE? Q.5) Write the difference between Infra sound and ultra sound?
Answers
1.
A sound wave of wavelength 4cm travel with a speed of 360 M per second find its frequency 1440.
2.
When the transducer is pressed against the skin, it sends small pulses of inaudible, high-frequency sound waves into the body. As the sound waves bounce off internal organs, fluids and tissues, the sensitive receiver in the transducer records tiny changes in the sound's pitch and direction.
3.
Reverberation is a phenomenon in which sound gets reflected as a result of multiple reflections from surfaces such as furniture, people etc. ... In this phenomenon, reflection can be either of sound or light waves. Reverberation is basically the occurrence of reflections that arrive in less than 50ms.
5.
The difference between infrasound and ultrasound is that infrasound is the barely audible low-frequency sound that humans can hear whereas ultrasound is the barely audible high-frequency sound. Both sounds are towards the ends of both sides of the human hearing frequency range, it is very difficult for humans to hear.
4.
