Section of two thermometers are shown. the thermometer on the left is labeled a and the thermometer on the right is labeled b. thermometer labeled a has markings forty degrees, forty five degrees, and fifty degrees at equal intervals. the thermometer labeled b has markings forty degrees, forty five degrees, and fifty degrees at equal intervals and there are four small markings equally spaced in between the numbers. which statement explains which thermometer is more appropriate to measure the temperature of a liquid at 43.6 °c?

a. thermometer a, because it measures temperature more accurately than b.

b. thermometer b, because it measures temperature more accurately than a.

c. thermometer a, because it measures temperature more precisely than b.

d. thermometer b, because it measures temperature more precisely than a.

Answer : The correct option is, (b) Thermometer B, because it measures temperature more accurately than A.

Explanation :

Accuracy : It is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 50 kg and one person weighed 48 kg and another person weighed 55 kg. Then, the weight measured by first person is more accurate.

Precision : It is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 1.8 kg each time. Then the measurement is said to be precise.

Level of precision is determined by the maximum number of decimal places.

As per question, the thermometer B has markings 40°, 45° and 50° at equal intervals and there are four small markings equally spaced in between the numbers and thermometer B has markings 40°, 45° and 50° at equal intervals but there is no small markings equally spaced in between the numbers. That means, thermometer B is measures temperature more accurately than thermometer A.

Hence, correct option is, (b) Thermometer B, because it measures temperature more accurately than A.

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