By heating a iron part with flame, first it becomes red, then reddish yellow and at last white. Which can give correct explanation from following ?

By heating a iron part with flame, first it becomes red, then reddish

1.	By heating a iron part with flame, first it becomes red, then reddish yellow and at last white. Which can give correct explanation from following ?
Answer» <html><body><p><a href="https://interviewquestions.tuteehub.com/tag/newton-11212" style="font-weight:bold;" target="_blank" title="Click to know more about NEWTON">NEWTON</a>'s law of <a href="https://interviewquestions.tuteehub.com/tag/cooling-933550" style="font-weight:bold;" target="_blank" title="Click to know more about COOLING">COOLING</a> <br/>Stefan's law<br/>Wien's displacement law<br/>Kirchoff's law</p>Solution :`lamdaprop1/T` where, T = <a href="https://interviewquestions.tuteehub.com/tag/temperature-11887" style="font-weight:bold;" target="_blank" title="Click to know more about TEMPERATURE">TEMPERATURE</a></body></html>