Question

A constant volume of gas thermometer shows pressure readinh of 50cm and 90cm of mercury at 0degreeC and 100degreeC respectively when the pressure reading is 60cm of mercury the temprature is

Answer 1

We know, when V is constant, P is proportional to T.

P = AT + B

When T = 0, P = 50 cm of mercury

=> 50 = 0 + B

=> B = 50

When T = 100, P = 90 cm of mercury

=> 90 = 100A + 50

=> A = 0.4

Now, when P = 60 cm of mercury

P = AT + B

=> 60 = (0.4)(T) + 50

=> T = 10/0.4 = 25 oC

Hope it helped......☺️

Answer 2

when the pressure reading is 60cm of the mercury the temperature is 25°C