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B
the density of the metal is greater than that of wood.
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C
the sound is not conducted by metals but is radiated.
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D
wood dampens vibrations while metals are elastic.
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Solution
The correct option is C wood dampens vibrations while metals are elastic. Metal are elastic, hence they allow the molecules to oscillate and waves to propagate, whereas in wood being inelastic waves are damped. Hence bells are made of wood.