Four rods of silver, copper, brass and wood are of same shape. They are heated together after wrapping a paper on it, the paper will burn first on
Silver
Copper
Brass
Wood
When thermal conductivity is said to be constant ?
On a cold morning, a metal surface will feel colder to touch than a wooden surface because
Four rods of same material and having the same cross section and length have been joined, as shown. The temperature of junction of four rods will be........ $^oC$
Three rods made of the same material and having the same cross section have been joined as shown in the figure. Each rod is of the same length. The left and right ends are kept at ${0^o}C$ and ${90^o}C$ respectively. The temperature of the junction of the three rods will be ...... $^oC$
Surface of the lake is at $2°C$ . Find the temperature of the bottom of the lake..... $^oC$