The temperature inside a refrigator is t...

The temperature inside a refrigator is `t_2^@`C and the room temperature is `t_1^@C`. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

`(t_2 + 273)/(t_1-t_2)`

`(t_1 + t_2)/(t_1 +273)`

`t_1/(t_1-t_2)`

`(t_1 + 273)/(t_1-t_2)`

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