Physics, asked by Kirtidevi, 8 months ago

Infrasonic waves are those which have frequency lower than ........... Hz.

(A) 20

(B) 17,000

(C) 20,000

(D) None of these

Answers

Answered by rajraghavsingh5

0

Answer:

the answer is

(c)20,000

Answered by debasisnandy01

0

Explanation:

20,000 is the answer of your question

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