Sound waves cannot travel through a
copper wire placed in air
silver slab placed in air
glass prism placed in water
wooden hollow pipe placed in vacuum
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CDS-1 – 2018
– Sound travels at different speeds in different media (typically fastest in solids, slower in liquids, and slowest in gases).
– Vacuum has negligible matter, so it cannot support the propagation of mechanical waves like sound.