Speed of sound in air is found to be 344ms at 80∘ C. Find the change in speed of sound for a 1∘ C increase in temperature.
None of these
Given at 20∘C v = 344 m/s
T1 = 273 + 20 = 293 k
T2 = T1 + ∆T
v1= 344
Let v2 = v1 + ΔV
We know
v2v1=√T2T1
v2+Δvv1=√T1+ΔTT1
1+Δvv1=√1+ΔTT1
1+Δvv1=1+12ΔTT1 (Using approximate)
⇒ Δv=12ΔTT1v1=121293 344
= 0.587 Δv = 0.6 ms.