Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Wave

An object produces a sound of 15 Hz. Which of the following is correct?

1

This sound cannot be heard by us

2

This sound can be heard only through solids

3

This sound can be heard by us

4

More than one of the above.

5

None of the above

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