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A uniform thermometre scale is at steady...

A uniform thermometre scale is at steady state with its 0 cm mark at `20°C` and 100 cm mark at `100°C`. Temperature of the 60 cm mark is-

A

`48^(@)C`

B

`68^(@)C`

C

`52^(@)C`

D

`58^(@)C`

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