Woollen clothes are used in winter season because woolen clothes

In a steady state of thermal conduction,the temperatures of the ends $A$ and $B$ of a $20 \, cm$ long rod are $100^\circ C$ and $0^\circ C$ respectively. What will be the temperature of the rod at a point at a distance of $6 \, cm$ from the end $A$ of the rod (in $^\circ C$)?

Ice starts forming in a lake with water at $0^{\circ}C$ when the atmospheric temperature is $-10^{\circ}C$. If the time taken for $1 \; cm$ of ice to form is $7$ hours,then the time taken for the thickness of ice to change from $1 \; cm$ to $2 \; cm$ is:

For heat to flow from one end to the other in a solid,it is necessary to have:

The temperature gradient in a rod of $0.5 \ m$ long is $80 \ ^oC/m$. If the temperature of the hotter end of the rod is $30 \ ^oC$,then the temperature of the cooler end is ...... $^oC$.

$A$ piece of glass is heated to a high temperature and then allowed to cool. If it cracks,a probable reason for this is the following property of glass: