Question

B. Statements given below are incorrect. Write the correct statements : 1. The number of vibrations of a vibrating body a in one second is called its time period. 2. The sound of frequencies less than about 20 Hz is called sonic sound. 3. Reflection of sound takes place only from materials of loose texture. 4. The repetition of the sound, which is refected from a high building, is called multiple vibrations. 5. Pitch is the effect produced in the ear due to the sound of some particular amplitude.​

Answer 1

Answer:

1)true 2)false 3 )false 4)true 5)true.

Answer 2

Answer:

1-Correct

2-Correct

3-Wrong

4-Correct

5-Wrong

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