1.

At what temperature, the speed of sound in the air will become double of its value at 27^(@)C?

Answer»

`54^(@)C`
`627^(@)C`
`327^(@)C`
`927^(@)C`

Solution :`(v_(1))/(v_(2))=sqrt((T_(1))/(T_(2)))IMPLIES(v_(1))/(2v_(1))=sqrt((T_(1))/(T_(2)))`
`(1)/(4)=(27+273)/(T_(2))`
`T_(2)=300xx4=1200K`
`T_(2)=1200-273`
`T_(2)=927^(@)C`


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