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Question
An iron rod is heated. The colors at different temperatures are noted. Which of the following colors shows that the iron rod is at the lowest temperature?
An iron rod is heated. The colors at different temperatures are noted. Which of the following colors shows that the iron rod is at the lowest temperature?
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Solution
The correct option is A Red
As the body gets hotter, the frequency of the emitted radiation keeps on increasing. Blue colour has the highest frequency out of red, orange and yellow. Thus, as the iron rod gets heated first it would become red, then orange, and then eventually blue.
As the body gets hotter, the frequency of the emitted radiation keeps on increasing. Blue colour has the highest frequency out of red, orange and yellow. Thus, as the iron rod gets heated first it would become red, then orange, and then eventually blue.
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