The part of the sun’s radiation that heats the solar cooker is infrared ray. Infrared radiation carries heat energy and is responsible for warming objects exposed to sunlight. Solar cookers utilize this infrared radiation to heat and cook food, making ...
Tiwari Academy Discussion Latest Questions
Mercury is a very good conductor of heat. Mercury, being a metal, exhibits high thermal conductivity due to its densely packed atoms, facilitating efficient heat transfer. Water, ether, and benzene, being organic compounds, have lower thermal conductivity compared to mercury.
The transmission of heat through molecular structure is called conduction. Conduction occurs when heat is transferred through direct contact between molecules, allowing energy to move from one molecule to another.
The best conductor of heat among is sea water. Sea water contains dissolved salts and minerals, which increase its thermal conductivity compared to cold water, hot water, and distilled water.
If a metal is used in making cooking utensils, then the thermal conductivity should be high. High thermal conductivity ensures efficient and even heat distribution, which is essential for effective cooking.
If the doors of a refrigerator kept in a room are left open, the room will gradually get heated. The refrigerator’s motor generates heat while trying to cool the room, resulting in more heat being expelled than removed.
If a table fan is run in a closed room, the air in the room will be heated. This is because the fan’s motor generates heat while operating, slightly increasing the room’s temperature despite creating a cooling sensation through air ...
On cold days, the iron block feels colder than the wooden block because iron has higher thermal conductivity than wood. Thermal conductivity refers to a material’s ability to conduct heat. Iron quickly conducts heat away from the skin, giving a ...
The unit of heat is Degree Celsius. Degree Celsius is a unit of temperature, not heat. The other options (Calorie, Kilocalorie, Joule) are units used to measure heat or energy, while Degree Celsius measures temperature.
The SI unit of temperature is the kelvin (K). It is defined based on the triple point of water, where water exists in equilibrium as a solid, liquid, and vapor. The kelvin scale is an absolute temperature scale, with 0 ...