The resistance of a platinum wire of a platinum resistance thermometer at the ice point is 5Ω and at steam point is 5.4Ω. When the thermometer is inserted in a hot bath, the resistance of the platinum wire is 6.2Ω . Find the temperature of the hot bath.

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3000°C

30oC

300°C

300 K

answer is C.

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Detailed Solution

R2=R1(1+αΔT)

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