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.
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?
Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?
Name the characteristic which helps us distinguish between a man's voice and a woman's voice, even without seeing them.
How does the pitch of a sound depend on frequency ?
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
What name is given to sound waves of frequencies higher than 20 kHz ?
Give one use of ultrasound in industry and one in hospitals.
How is it that bats are able to fly at night without colliding with other objects ?
Write any three applications (or uses) of ultrasound.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
