Advertisements
Advertisements
प्रश्न
Name the unit used to measure the loudness of sound. Also write its symbol.
Advertisements
उत्तर
Loudness of sound is measured in decibel. Its symbol is dB.
APPEARS IN
संबंधित प्रश्न
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
Explain the working and application of a sonar.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Fill in the blank with suitable word :
Quality of sound depends on ........................
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
How is it that bats are able to fly at night without colliding with other objects ?
What type of waves are generated by SONAR device fixed to a fishing ship ?
