Question

The velocity of sound in a gas at temperature `27^@C` is `V` then in the same ahs its velocity will be `2V` at temperature.
A. `54^(@)C`
B. `327^(@)C`
C. `927^(@)C`
D. `108^(@)C`

Answer 1

Correct Answer - C
In a gas, `V=sqrt((gammaRT)/M)rArr V alpha sqrt(T)`
`rArr V/(2V)=sqrt(300/T)`
`rArr T=300xx4=1200 K`
`= 927^(@)C`