Question

A faulty Fahrenheit thermometer reads 112 F while a correct Celsius thermometer reads 45oc. The correction required to be applied​

Answer 1

Given:

A faulty Fahrenheit thermometer reads 112 F while a correct Celsius thermometer reads 45° C.

To find:

Correction required in the faulty thermometer.

Calculation:

General expression relating Celsius and Fahrenheit scale of temperature is as follows:

$\therefore \: \dfrac{C}{5} = \dfrac{F - 32}{9}$

Putting value of C;

$= > \: \dfrac{45}{5} = \dfrac{F - 32}{9}$

$= > \: 9 = \dfrac{F - 32}{9}$

$= > \: F - 32 = 9 \times 9$

$= > \: F - 32 = 81$

$= > \: F = 81 + 32$

$= > \: F = 113$

Therefore ∆F = 113-112 = 1° F

So, correction of + 1° F is required in the faulty thermometer.