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Science Preparation for Engineering Entrance
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The ratio of the speed of sound in nitrogen gas to that in helium gas at 300 K is

 

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Sanjay Kumar

Speed of sound in a gas is inversely proportional to square root of its molar mass at a given temperature. N2 has molar mass 28 and He has molar mass 4. Thus (c) is the correct answer.

Nvbsridevi

Gamma value is not used in the solution. i think fourth option is correct