Passage III
A mercury thermometer, at an initial temperature of 20°C, was placed in 30°C water, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using water samples at 40°C and 50°C (see Figure 1). Next, the same thermometer, at an initial temperature of 50°C, was placed in an air sample at 20°C, and the temperature registered by the thermometer was recorded over time. This procedure was repeated using air samples at 30℃ and 40℃ (see Figure 2).
(Note: Assume that the designated temperatures of the water samples and air samples did not change during the measurements.)
12. Based on Figure 2, at 250 sec, the thermometer reading in the 40℃ air most likely was closest to which of the following?
Your Answer is
Correct Answer is H
Explanation
Look at figure 2, when the abscissa is 250 sec, the ordinate temperature corresponding to air temperature 40°C is about 41°C