For hydrogen gas, C_p-C_v=a and for oxygen gas, C_p-C_v=b. So the relation between a and b is given by

MHT CET Physics question

For hydrogen gas, and for oxygen gas, . So the relation between a and b is given by

Answer: (D)

If and are molar specific heats, Mayer's relation gives for every gas, so

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Question ID VK-063232