Question

On Reaumer scale of temperature the melting point of ice and the boiling point of water are taken as 0R and 80R respectivel. The freezing point and boiling point of mercury on Celsius scale are 39C and 367C respectively. Express these temperature on Reaumer scale.

• A. 12.2R, 127R
• B. 41R, 290R
• C. 31.2R, 293.6R
• D. 71R, 293.6R

Answer 1

The correct option is C 31.2R, 293.6R

In Reaumer scale we take

$0C^0=0R$

$100C^0=80R$

$1C^0=\frac{80}{100}=0.8R$

if we convert the celcius degree to R

$\Rightarrow 39C^0=0.8\times 39R=31.1R$

$\Rightarrow 367C^0=0.8\times 367=293.6R$

hence option C is correct