Echo is derived from ?
AGreek
BFrench
CArabic
DUrdu
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Related Questions:
In which one of the following medium, sound has maximum speed ?
The change of frequency experienced by the receiver either because of the relative motion of
the source or receiver or both:
താഴെ പറയുന്നവയിൽ സഞ്ചരിക്കാൻ മാധ്യമം ആവശ്യമുള്ളത് ഏത് ?
The height of the peaks of a sound wave ?
Speed of sound is higher in which of the following mediums?