Interested to Buy Any Domain ? << Click Here >> for more details...
Explain the Radiation ?
- 1 Answers
- 1377 Views
- I also Faced
- E-Mail Answers
Answer / raghavendra tripathi
It is the transfer of heat from a hot body to a cooler body without appreciably heating the intervening space.
Experimentally it has been proved that
(i)A good radiator is a good absorber and a poor reflector.
(ii)And a bad radiator is a bad absorber and a good reflector
Laws of Radiation
1. The rate of loss of heat by a body radiation process is directly proportional to its difference of temperature over that of its surroundings
2. The amount of heat radiated per second depends upon the are and nature of the radiating surface
3. All bodies at all temperatures radiate heat and also absorb radiated heat from the surrounding
4. Heat radiations obey various light law. They are reflected, refracted, diffused and polarised
Application:
1. White clothes are preferred in summer as white cloth absorbs very little of heat from sun and reflect most of the heat. Coloured cloths are preffered in winter as they absorb most of heat
2. An electric radiators, polished metals are used as they are food reflectors
3. Articles which are required to retain heat are polished from outside so as to have less heat radiations
4. Milk is heated in unglazed earthen vessles in villages to have less heat radiations
| Is This Answer Correct ? | 0 Yes | 0 No |
What are the characteristics of dead stars?
which of the following would be the most suitable for making an electromagnet
egg or hen which came first
Similar charges repel while dissimilar ones attract each other. How does two electrons attract each other during the formation of bond or why don't the protons in the nucleus repel?
Explain the Radiation ?
Two bulbs, one of 600W and the other of 100W having same voltage rating are connected in series across the supply in a room.Which bulb will glow brighter? If one of the bulb is switched off, what will be effect on illumination?
Explain what is different between secondary electron image and back scattered electron image?
what is Potassium Carbonate ?
Explain what is h1n1?
What is the role of transformer in a rectifier?
When we jump form the boat to the bank why the boat goes backwards from the bank ?
Why we put the time (t) always in x-axis?
General Physics 
