A sound producing body is at considerable distance from a man. There can be four different media $W, X, Y$ and $Z$ between the sound producing body and the man. The medium $X$ brings the sound to man most quickly whereas medium $Z$ takes the maximum time. The time taken by medium $W$ in bringing sound to man is less than that of $X$ but more than that of $Z.$ The medium $Y,$ however, fails to bring the sound from the sound producing body to the man. Which medium could be the one:
- Having no fixed shape and no fixed volume$?$
- Having a fixed volume but no fixed shape$?$
- Having the same composition as that on the moon$?$
- Having a fixed shape and a fixed volume$?$
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- $Z$ medium has no fixed shape and no fixed volume.
- $W$ medium has a fixed volume but no fixed shape.
- $Y$ medium has the same composition as that on the moon.
- $X$ medium has a fixed shape and a fixed volume.
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