A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using:

  • Option 1)

    Newton's Law of cooling

  • Option 2)

    Stefan's Law

  • Option 3)

    Wien's displacement Law

  • Option 4)

    Kirchoff's Law

 

Answers (2)

Temperature and wavelength (colour) is related through wiens displacement law \lambda mT=b


Option 1)

Newton's Law of cooling

This is incorrect option

Option 2)

Stefan's Law

This is incorrect option

Option 3)

Wien's displacement Law

This is correct option

Option 4)

Kirchoff's Law

This is incorrect option

Wiens displacement law

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