1.

Three bodies A, B and C have equal surface area and thermal emissivities in the ratio e_(A):e_(B):e_(C)=1:(1)/(2):(1)/(4). All the three bodies are radiating at same rate. Their wavelengths corresponding to maximum intensity are l_(A),l_(B) and l_(C) respectively and their temperature are T_(A),T_(B) and T_(C) on kelvin scale, then select the incorrect statement.

Answer»

`SQRT(T_(A)T_(C))=T_(B)`
`sqrt(lambda_(A)lambda_(C))=lambda_(B)`
`sqrt(e_(A)T_(A))sqrt(e_(C)T_(C))=e_(B)T_(B)`
`sqrt(e_(A)lambda_(A)T_(A).e_(B)lambda_(B)T_(B))=e_(C)lambda_(C)T_(C)`

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