How can a Black board in a room stays at the same temperature as rest of the room?

Answer 1

A blackboard can stay at the same temperature as the rest of the room through a process called thermal equilibrium. When the blackboard is exposed to the room temperature, it absorbs heat energy from its surroundings. As it absorbs heat, it reaches the same temperature as the room through conduction, where heat is transferred through direct contact with the surrounding air. This equilibrium ensures that the blackboard does not feel significantly warmer or cooler than the room itself.

Answer 2

A blackboard would be the same temperature as the rest of the room. If the sun shone through the window directly onto the blackboard, the blackboard would absorb more of the sun's heat, and become warmer that the rest of the room.
Dark colours absorb heat better than light colours.

Answer 3

Any object tends to exchange heat with its surroundings, until it has the same temperature. For example, if the room gets a bit warmer, some heat will transfer to the blackboard until it is, again, at the same temperature as the room.

Answer 4

A blackboard can stay at the same temperature as the rest of the room because it has a high thermal conductivity, allowing it to quickly equilibrate with the surrounding air temperature. Additionally, the black color absorbs and emits heat effectively, preventing any significant temperature difference from developing between the blackboard and the room.