The total energy radiated from a black b...

The total energy radiated from a black body source is callocted for one minute and is used to heat a quantity of water. The temperature of water is found to increase from `20^(@)C` to `20.5^(@)C`. If the absolute temperature of the black body is doubledand the experiment is repeated with the same quantity of water at `20^(@)C`, the temperature of water will be

`21^(@)`

`22^(@)C`

`24^(@)C`

`28^(@)C`

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