A thermometer gives a correct reading only when:

  1. it is colder than the body
  2. it has reached thermal equilibrium with the body
  3. it is hotter than the body
  4. it is first heated
Answer

B) it has reached thermal equilibrium with the body

Then it has the same temperature. SLO P-12-C-01 · Knowledge

Physics MCQ · More Kinetic Theory and First Law of Thermodynamics MCQs · Practise