Q.

If v1 is the speed of sound in a diatomic gas at 273°C  and v2 is the r.m.s. speed of its molecules at 273 K, then  v1v2=

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a

1514

b

87

c

1415

d

78

answer is B.

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Detailed Solution

v1v2=γRT1M3RT2M=γT13T2

v1v2=7×5465×3×273=1415

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