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13. Sound
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Q62 of 123 Page 254

Name one animal which can produce ultrasonic sounds.

Bats can produce ultrasonic sounds.


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62

What is the upper limit of frequency of human hearing?

62

What is the lower limit of frequency of human hearing?

62

Name two animals which can hear ultrasonic sounds.

63

What is a vibration (or an oscillation)? Define 'amplitude' of vibration of an object.

Questions · 123
13. Sound
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