Two ends of rods of length L and radius R of the same material are kept at same temperature. Which of the following rods conducts the maximum heat?

Which of the following materials has the highest thermal conductivity?

In a pressure cooker, the temperature at which the food is cooked depends mainly upon which of the following?

Which one of the following statements best defines the concept of heat ?

Which one of the following is the lowest possible temperature?

Which one of the following set phenomena would increase on raising the temperature?