Four indentical rods of same material ar...

Four indentical rods of same material are joined end to end to from a square. If the temperature difference between the ends of a diagonal is `100^(@)C`, then the temperature difference between the ends of othe diagonal will be :

`0^(@)C`

`100^(@)C`

`(100)/(l)""^(@)C`, where l is the length of each rod

`(100)/(2l)""^(@)C`.

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