A platinum resistance thermometer reads `0^@ C` when its resistance is `80 Omega and 100^@ C` when its resistance is `90 Omega`. Find the temperature at which the resistance is `86 Omega`.
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Correct Answer – C
The temperature on the platinum scale is
`t = (R_t – R_0)/(R_100 – R_0) xx 100^@`
= `(86 – 80)/(90 – 80) xx 100^@ C`
= `60^@ C`.