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Q. |
Speed of sound is the greatest in : |
A. | Water |
B. | Air |
C. | Glass |
D. | Glycerine |
Answer» C. Glass | |
Explanation: Sound travels faster in liquids and non-porous solids than it does in air. It travels about 4.3 times as fast in water (1,484 m/s), and nearly 15 times as fast in iron (5,120 m/s), than in air at 20 degrees Celsius. |
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