Question

Under a steady state, the temperature of a body
A. Increases with time
B. Decreases with time
C. Do not change with time and is the same at all points of the body
D. Do not change with time but is different at different points of the body

Answer 1

Hint: In order to solve this problem we need to understand the steady state of temperature. When a body or a system is in thermal equilibrium with its surroundings, then the system and the surroundings are at the same temperature known as steady state temperature.

Complete step by step solution:
A steady state is defined as the condition of a system or process that does not change with respect to time. If we talk about the surface of a body, due to radiation, conduction, etc the heat will be lost to the surroundings. That is, at different points we have different temperatures, but the temperature of the body does not change.

In a steady state, there will be no absorption of heat in any position and the temperature of the body will not change with time. Heat passes on or is radiated from its surface. Therefore, in a steady state, the temperature of the body does not change with time but can be different at different points of the body.

Hence, option D is the correct answer.

Note: Here in the given problem it is important to remember the definition of steady state and the steady state of temperature and how the temperature of a body is related to the steady state.