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  1. Some common mediums in which speed of sound of sound?
    1. Air
    2. Steel
    3. Copper
    4. Water
    What is the correct increasing order of the speed of sound ?
    1. 1 < 4 < 2 < 3
    2. 4 < 1 < 2 < 3
    3. 1 < 4 < 3 < 2
    4. 4 < 1 < 3 < 2
Correct Option: C

NA



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