A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.

(a) water
(b) wax
(c) vacuum
(d) empty vessel

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Solution

Sound waves cannot propagate through vacuum.
Ans: (c) Vacuum.

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

Sound waves cannot propagate through vacuum. Ans: (c) Vacuum.

A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing rang. This note must then be passing through.

(a) water
(b) wax
(c) vacuum
(d) empty vessel

Sound waves cannot propagate through vacuum.
Ans: (c) Vacuum.