Question

A constant volume gas thermometer shows
pressure readings of 50 em and 90 cm of
mereury at 0' C. 100° C respectively. The
temperature of the bath when pressure
reading is 60 cm of mercury.
1) 45°C 2) 30°C 3) 25 °C4) 20°C plse tell me fast frnds​

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

hey Brainly user!

Here is your answer

Given,

${P_o=50cm}$

${P_100=90cm}$

${P_t=60cm}$

t=60-50/90-50×100

t=25 Celsius