Advertisements
Advertisements
प्रश्न
Explain how bats use ultrasound to catch a prey.
Advertisements
उत्तर
Bats produce high-pitched ultrasonic squeaks. These high-pitched squeaks are reflected by objects such as preys and returned to the bat’s ear. This allows a bat to know the distance of his prey.
संबंधित प्रश्न
Explain the working and application of a sonar.
Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Fill in the blank with suitable word :
Quality of sound depends on ........................
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.
Explain how, bats use ultrasound to catch the prey.
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
