Advertisements
Advertisements
Question
Explain how do bats locate the obstacles and prey in their way.
Advertisements
Solution
Bats locate the obstacles and prey in their path by producing and hearing the ultrasound. They emit an ultrasound which returns after striking an obstacle in their way. By hearing the reflected sound and from the time interval (when they produce ultrasound and they receive them back), they can judge the direction and the distance of the obstacle in their way.
APPEARS IN
RELATED QUESTIONS
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
![]() |
![]() |
| I | II |
![]() |
![]() |
| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
State two applications of ultrasound.
What do you understand by the term infrasonic vibrations?
What do you understand by the term ultrasonic vibrations?
Name three animals which can hear ultrasonic vibrations.
Does SONAR make use of infrasonic sound?
State the main components of a hearing aid.
Describe a simple method to find the depth of a submerged ship.
The range of audible frequency for the human ear is




