Rohan wants to test whether a white object or a black object would heat up faster in the sun. The picture shows you his experiment. These thermometers were left out in the sun for 30 minutes.
figure

Which of the following statements is true?
(a) Thermometer 1 reads the same as thermometer 3.
(b) Thermometer 2 shows a higher temperature than thermometer 3.
(c) Thermometer 3 shows higher temperature than thermometer 1.
(d) Thermometer 1 reads the same as thermometer 2.

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Solution

(b) Thermometer 2 shows a higher temperature than thermometer 3.
Black object absorbs more heat than the white object. Hence, temperature of black object is higher than the white object.

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(b) Thermometer 2 shows a higher temperature than thermometer 3. Black object absorbs more heat than the white object. Hence, temperature of black object is higher than the white object.

(b) Thermometer 2 shows a higher temperature than thermometer 3.
Black object absorbs more heat than the white object. Hence, temperature of black object is higher than the white object.