Quelpr
4 marksDesign and Use of Thermometers

CAPE Physics Unit 1 · 2019 · Paper 2 · Question 3(c)

State TWO advantages of a thermocouple and give TWO corresponding situations where it will be the best choice of thermometer.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 3(a)On the grid provided in Figure 4 on page 19, plot the calibration curve (emf vs temperature) for the thermocouple. Draw the line of best fit through the points.[4 marks]
  2. 3(b)(i)Using the calibration curve plotted in (a), determine the temperatures when the thermocouple reads 51.0 mV.[1 mark]
  3. 3(b)(ii)With reference to the answer in (b)(i) and the calibration curve plotted in (a), state why this thermocouple is NOT the best option for use as a thermometer.[1 mark]
  4. 3(d)(i)Using the information given in Table 3 on page 20, sketch a P-V graph of the gas engine cycle, clearly labelling EACH stage and its corresponding pressure and…[4 marks]
  5. 3(d)(ii)Calculate the initial temperature of the gas (Stage A).[3 marks]
  6. 3(d)(iii)Determine the heat energy supplied to the gas in going from Stage A to Stage B.[3 marks]
  7. 3(e)Define the internal energy of a gas.[1 mark]
  8. 3(f)State the first law of thermodynamics, clearly defining EACH term.[4 marks]
  9. 3(g)With reference to the first law of thermodynamics, calculate the change in internal energy of the gas in the engine as it goes from Stage B to Stage C.[2 marks]
  10. 3(h)State what happens to the volume, temperature and pressure of the gas in this process.[3 marks]

More practice: the rest of this paper · more Design and Use of Thermometers questions · all CAPE Physics Unit 1 past papers