Question

State whether the following statements are True or False.
1. A sound wave has alternate crests and troughs.
2. Musical notes are made by irregular vibrations.
3. Normal hearing range of human beings is between 180 and 200 dB.
4. The SI unit to measure frequency is metre.
5. Pitch of a sound depends on frequency.
6. SONAR is used to measure the depth of the sea.​

Answer 1

Answer:

1 true

2 false

3 false

4 true

5. true

6. false

Answer 2

Answer:

1 true

2 false

3 false दभदढढदणदणददणमदणलरमथणथरणमरम

4 true

5. true

6. false

Explanation:

़लिढढि़रिढिण़ल़ीण़ीतदीणोदचददणदणण