Chapter 10 - Temperature and Kinetic Theory - Learning Path Questions and Exercises - Exercises - Page 383: 11

a). (3) $T_{F}=T_{C}$ b). $-40^{\circ}C=-40^{\circ}F$

a). (3) $T_{F}=T_{C}$ because we want to find the temperature at which C and F scales have same readings. b). Let $T_{F}=T_{C}=T$ Now, $F=1.8C+32$ So, $T=1.8T+32$ or, $T=-40$