The resistances of the platinum wire of a platinum resistance thermometer at the ice point and steam point are 8  and 10  respectively. After

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🧑‍🏫 Author: Aditya Bhatt Sir   |   🕒 Last Updated: July 13, 2025

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📘Question

The resistances of the platinum wire of a platinum resistance thermometer at the ice point and steam point are 8 Ω and 10 Ω respectively. After inserting in a hot bath of temperature 400°C, the resistance of platinum wire is : 

(1) 2Ω 

(2) 16Ω

(3) 8Ω 

 (4) 10Ω                                                   (JEE-2024)   

✅ Answer

The resistances of the platinum wire of a platinum resistance thermometer at the ice point and steam point are 8 Ω and 10 Ω respectively. After inserting in a hot bath of temperature 400°C, the resistance of platinum wire is :  (1) 2Ω  (2) 16Ω (3) 8Ω   (4) 10Ω     

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