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Q. |
Speed of sound in solids is - |
A. | 10 times that in gas/ 10 |
B. | 20 times that in gas/ 20 |
C. | 5 times that in gas/ 5 |
D. | 15 times that in gas/ 15 |
Answer» D. 15 times that in gas/ 15 | |
Explanation: Sound travels at 343 m/s in air; it travels at 1,480 m/s in water (4.3 times as fast as in air); and at 5,120 m/s in iron (about 15 times as fast as in air). |
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