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

In a constant volume gas thermometer, the pressure of the gas is 70 kPa at the ice point. Determine the pressure at the steam point.

Options

  1. A170 kPa
  2. B100 kPa
  3. C51 kPa
  4. D96 kPa

Correct answer

D. 96 kPa

Step-by-step solution

For a constant volume gas thermometer, the pressure of the gas is directly proportional to its absolute temperature. P₁ T₁ = P₂ T₂ Given: Pressure at ice point, P₁ = 70 kPa Absolute temperature at ice point, T₁ = 273.15 K Absolute temperature at steam point, T₂ = 373.15 K Substituting the values: P₂ = 70 373.15 273.15 P₂ 70 1.366 P₂ 95.62 kPa Rounding to the nearest integer, the pressure at the steam point is 96 kPa .

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