A) \[500{}^\circ C\]
B) \[819{}^\circ C\]
C) \[1071{}^\circ C\]
D) \[1430{}^\circ C\]
Correct Answer: B
Solution :
Velocity of sound \[\upsilon \propto \sqrt{T}\] at \[819{}^\circ C\], speed of sound will be double than that of at \[0{}^\circ C\]
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