Q.A solar cooker and a pressure cooker both are used to cook food. Treating them as thermodynamic systems, discuss the similarities and differences between them.

Step 1. Similarity: both a solar cooker and a pressure cooker are thermodynamic systems in which heat is supplied to raise the temperature of food/water enclosed within a boundary (the cooker body), in order to cook the food — both rely on heat exchange across their system boundary.

Step 2. Difference in system type and process: a solar cooker gains heat slowly from solar radiation, and its interior stays at (or close to) atmospheric pressure throughout — it behaves closer to an isobaric heating process at roughly constant, near-atmospheric pressure, with water inside boiling (if at all) at the normal 100°C.

Step 3. A pressure cooker, by contrast, is a sealed (closed) system — its lid is airtight except for a small valve. As heat is added, since the trapped steam cannot escape freely, the internal pressure builds up well above atmospheric. By the same physics that makes phase changes isothermal only at a FIXED pressure, raising the pressure inside the pressure cooker raises the temperature at which water boils, well above the usual 100°C. …

Classify each cooker as a thermodynamic system (open/closed, roughly isobaric vs. sealed/pressurised) and connect the pressure difference to …

Describing only the everyday mechanism (sunlight vs. flame) without connecting it to the thermodynamic system classification (open vs. sealed) and the resulting pressure-temperature (boilin …