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प्रश्न
How are bats able to avoid obstacles in their way?
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उत्तर
Bats emit the high frequencies that range between 20 KHz to 75 KHz. The echoes from these sounds help in locating the obstacles in their path and to avoid them.
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संबंधित प्रश्न
State one observation from everyday life which shows that sound travels much more slow than light.
Fill in the blank and explain.
Sound does not travel through ______.
How long will sound take to travel in (a) and iron rail and (b) air, both 3.3 km in length? Take speed of sound in air to be 330 m/s and in iron to be 5280 m/s.
Write the answer in your own words.
Explain with the help of practical examples how sound is propagated through solids.
What is the approximate value of the speed of sound in air at N.T.P.?
What is the audible range of frequency?
Does audible range of frequency vary from person and also with the age of the person?
Name the Sound of the Frequency Given Below:
2000 Hz
The small to and fro motion is called vibration.
Find the odd one out.
