Chemical Engineering - Chemical Engineering Basics - Discussion
Discussion Forum : Chemical Engineering Basics - Section 1 (Q.No. 36)
36.
Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
Discussion:
13 comments Page 1 of 2.
Ketema shibiru said:
2 years ago
Please explain me the answer in detail.
(1)
Kiran Gohel said:
4 years ago
Emissivity value 1 for black body and 0.8 for grey body but, same for all wave length for grey body so,anawer is grey body.
(1)
Chai said:
6 years ago
Grey body is defined as a body with constant emissivity over all wavelengths and temperatures.
So, the answer is A grey body.
So, the answer is A grey body.
(1)
Manamath said:
8 years ago
Answer is black body.
Pradeep singh said:
8 years ago
Real materials emit energy at a fraction "called the emissivity" of black-body energy levels. By definition, a black body in thermal equilibrium has an emissivity of ε = 1.0.
A source with lower emissivity independent of frequency often is referred to as a grey body. Construction of black bodies with emissivity as close to one.
A source with lower emissivity independent of frequency often is referred to as a grey body. Construction of black bodies with emissivity as close to one.
Mukesh nagar said:
9 years ago
Black boby absorptivity 1 and emissivity 0.
Gray body emissivity 1.
White body transitivity 1.
Gray body emissivity 1.
White body transitivity 1.
Bindeshwari Prasad Pandey said:
9 years ago
Black body is the right answer.
Because it has absorptivity 1 and emissivity 1 for all wavelength.
While the grey body has max emissivity of monochromatic wavelength.
Because it has absorptivity 1 and emissivity 1 for all wavelength.
While the grey body has max emissivity of monochromatic wavelength.
Dinesh said:
10 years ago
Black body absorptivity is 1 but emissivity 0.
Dipu said:
1 decade ago
Answer will be black body. For black body emissivity = 1 & absorptivity = 1.
Muneeb said:
1 decade ago
No black body is a perfect absorber black body just absorb radiation.
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