Question

Which of the following is a reliable measure of hotness or coldness of a body?

• A. Our sense of touch
• B. Dimension of the body
• C. Temperature
• D. Observing the change in colour of the body

Answer 1

The correct option is C

Temperature

The dimension of a body has nothing to do with hotness or coldness. A body of large dimensions can be hot (for example the sun) or cold (like glaciers). Our sense of touch can be indicative but it is not a reliable way to judge the degree of hotness or coldness. Thus, temperature gives us an accurate idea whether a body is hot or cold.