Question

TRUE OR FALSE :

1. Sound is produces by vibrating bodies .
2. Loudness of a sound depends upon the freuquency of the sound
3. sound travels in vaccum
4. The human ear can hear two sounds seperately only if they reach the ear after an interval of one twentieth of a second .
5. SONAR is used to producs and transmit low frequency sound waves .

Answer 1

Answer:

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1) true 2) true 3) false 4)

Explanation:

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