A resistance thermometer reads R = 20.0 Ω, 27.5 Ω, and 50.0 Ω at the ice point (0∘C), the steam point (100∘C) and the zinc point (420∘C) respectively. Assuming that the resistance varies with temperature as Rθ=R0(1+αθ+βθ2), find the values of R0, α and β. Here θ represents the temperature on Celsius scale.
State the temperature of ice point and steam point on the Fahrenheit scale.
State the temperature of ice point and steam point on the Kelvin scale