A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through:
(a) water
(b) wax
(c) vacuum
(d) empty vessel

As given that a musical instrument is producing a continuous note and this note cannot be heard by a person having a  normal hearing range. Then this note must be passing through the vacuum. As we know that sound does not travel into a vacuum.

So, option (c) is correct.

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Updated on: 10-Oct-2022

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