A Centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowe

Question

A Centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers $140^{\circ} \mathrm{F}$. What is the fall in temperature as registered by the centigrade thermometer?\

Professor PC Thomas Classes · Answer

(c) : Here, $F=140^{\circ}$ Using $\frac{F-32}{180}=\frac{C}{100}$, or, $	herefore \frac{140-32}{180}=\frac{C}{100} \Rightarrow C=60^{\circ} \mathrm{C}$\ we get, fall in temperature $=40^{\circ} \mathrm{C}$\