- 273
^{0} **– 40**^{0}- 293
^{0} - Absolute zero K

## The numerical value of temperature read by thermometers both in ^{0}C and ^{0}F scales becomes equal at

The numerical value of temperature read by thermometers both in ^{0}C and ^{0}F scales becomes equal at **– 40 ^{0}.**

## Relation between different temperature scales

- cross multiply and solve for x
**9x – 5x = – 160****4x = – 160****x = – 40**^{0}

Hence, the numerical value of temperature read by thermometers both in ^{0}C and ^{0}F scales becomes equal at **– 40 ^{0}.**

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