Question

प्रश्न 3 चालन, संवहन और विकिरण को अपने परिवेश के उदाहरण से समझाते हुए
दो अंतर स्पष्ट कीजिए।
अंक-04 शब्दसीमा 75-100​

Answer 1

Explanation:

In conduction, heat flows from particle to partical from one end of a solid body to another but the material paricles do not leave their positions. In convection, heat is transferred by the actual motion of the heated partical from one place to other in a medium. <br> In Radiation, heat is transferred from one medium to other without affecting the intervening medium and without any actual motion of the material particles. <br> Conduction and convection require some material medium for transfer of heat, whereas radiation does not require any material medium for transfer of heat. <br> Conduction is generally possible, in solids, convection in liquid and gases, whereas radiation is possible in vacuum. <br> Radiation is the quickest mode of transfer of heat as compared to conduction and convection.