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Concepts Of Physics MCQ Edition [Volume 2]PhysicsHeat and Temperature

A gas thermometer determines temperature from the variation of pressure of a gas sample. If the pressure recorded at the melting point of lead is 2.20 times the pressure recorded at the triple point of water, determine the melting point of lead.

Options

  1. A220 K
  2. B124 K
  3. C821 K
  4. D601 K

Correct answer

D. 601 K

Step-by-step solution

For a constant volume gas thermometer, the temperature T is directly proportional to the pressure P . T = T_ tr P P_ tr Given that the pressure at the melting point of lead is P = 2.20 P_ tr and the temperature of the triple point of water is T_ tr = 273.16 K . Substituting the values: T = 273.16 2.20 P_ tr P_ tr T = 273.16 2.20 = 600.952 K Rounding off to the nearest integer, the melting point of lead is 601 K .

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