Question

Match the following
1. sound. a. periodic motion
2. oscillation b. frequency
3. pitch. c. less thn 20khz
4.subsonic(infra. d. high blood pres sonic) sound - sure
5. noise pollution e. vibrating body

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Answer 1

Answer:

don't know don't know don't know don't know don't know the answer

Answer 2

Explanation:

Choose t.e correct answer. Sound can travel through:

           (a) gases only

(b) solids only

           (c) liquids only

(d) solids, liquids and gases.

Ans. (d) solids, liquids and gases.