Correct option is D
The correct answer is (d) Diathermal wall
Explanation:
A closed system is one in which matter cannot enter or leave, but energy (such as heat or work)can be exchanged with the surroundings.
A diathermal wall is a type of wall that allows the transfer of heat between the system and its surroundings but prevents the exchange of matter.
This matches the definition of a closed system, making Diathermal wall the correct answer.
Information Booster:
Types of Thermodynamic Systems:
System Type | Matter Exchange | Energy Exchange | Example |
Open System | Yes | Yes | Boiling water in an open pan |
Closed System | No | Yes | Gas in a piston with movable walls |
Isolated System | No | No | Ideal Thermos flask |
Types of Walls:
Wall Type | Allows Heat? | Allows Matter? |
Adiabatic Wall | No | No |
Diathermal Wall | Yes | No |
Permeable Wall | Yes | Yes |
Semi-permeable Wall | Limited | Selective |
In a closed system, a diathermal wall is often used to allow heat exchange without matter exchange.
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