Statement-I : sound waves of frequency less than 20Hz is not audiable to human beings. Statement-II : infra sonic waves are produced during earthquakes.

Statement-I : sound waves of frequency less than 20Hz is not audiable

1.	Statement-I : sound waves of frequency less than 20Hz is not audiable to human beings. Statement-II : infra sonic waves are produced during earthquakes.
Answer» STATEMENT -I is true, Statement -II is true and Statement -I is correct explanation for Statement -II. Statement-I is true, Statement-II is true and Statement -II is not correct explanation of Statement-I. Statement-I is true, Statement-II is false and Statement-I is false, Statement-II is false. Solution :Statement-I is true, Statement-II is true but Statement -II is not correct explanation of Statement. So correct choice is B.

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Statement-I : sound waves of frequency less than 20Hz is not audiable to human beings. Statement-II : infra sonic waves are produced during earthquakes.

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