Write the coefficient of thermal coonductivity of a perfect heat conductor and that of a perfect heat insulator.

Describe an experiment to determine the coefficient of thermal conductivity of a good conductor by Searle's method.

A capacitor becomes a perfect insulator for

Coefficient of thermal conductivity is the product of heat, distance and reciprocal of (area x difference in temperature x time). The new value of a unit of coefficient of thermal conductivity, if fundamental units are 21.6 kg, 1 decimetre, 4 K and 1 minute will be ______ xx 10^(-6) new units.

Water is a bad conductor of heat.

Write the SI unit of heat capacity.

A thermal conductor is heated at one end. What is the theoretical value of its thermal conductivity in order that the other end also attains the same temperature?

Write two applications of bad conductors of heat.

Which of the following statements is false for a perfect conductor ?

Define thermal efficiency of a heat engine.

Water and air are good conductors of heat .