Physics 2 Marks Questions

Adiabatic walls does not allow to pass heat into mercury of bulb and diathermic allows to conducts heat through it. So in the bulb of thermometer diathermic walls are used.

The copper bottom of the steel utensil gets heated quickly. Because of the reason that copper is a good conductor of heat as compared to steel. But steel does not conduct as quickly, thereby allowing food inside to get heated uniformly.