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NEET2013PhysicsThermal Properties of MatterActual

A piece of iron is heated in a flame. If 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

Options

  1. AStefan's law
  2. BWien's displacement law
  3. CKirchoff's law
  4. DNewton's law of cooling

Correct answer

B. Wien's displacement law

Step-by-step solution

The equation of Wien's displacement law, i.e., _m T= constant.

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