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E.M.F. of a thermocouple is 25 mV//.^(@...

E.M.F. of a thermocouple is 25 `mV//.^(@)C` A galvanometer whose resistance is 40W, reads, `10^(-5)A` curren then minimum temperature which is determined by if will be

A

`8^(@)C`

B

`12^(@)C`

C

`16^(@)C`

D

`20^(@)C`

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