Q.

The ratio of densities of  O2 and N2  is 16:14. The temperature at which speed of sound in oxygen will be same as in nitrogen at  140C is 

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a

550C

b

1560C

c

3280C

d

4270C

answer is D.

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Detailed Solution

VO2=VN2

γRT32=γR28728

T=32×28728

T=328K

t=550C

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