A black rectangular surface of area A em...

A black rectangular surface of area A emits energy E per second at `27^circC`. If length and breadth are reduced to one third of initial value and temperature is raised to `327^circC`, then energy emitted per second becomes

`(4E)/(9)`

`(7E)/(9)`

`(10E)/(9)`

`(16E)/(9)`

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