A source of sound is moving at 10 m/s towards a stationary listener while producing a 1000 Hz pure tone. If the speed of sound in air is 343 m/s, what is the frequency heard by the listener? 970 Hz 1000 Hz 1029 Hz 1030 Hz 1045 Hz
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
A source of sound is moving at 10 m/s towards a stationary listener while producing a 1000 Hz pure tone. If the speed of sound in air is 343 m/s, what is the frequency heard by the listener?
970 Hz
1000 Hz
1029 Hz
1030 Hz
1045 Hz
Step by step
Solved in 3 steps with 2 images
