Emissivity of a white polished body in comparison to a black body is________________?

Question: Convective heat transfer, in which heat is transferred by movement of warmed matter is described by
[A].

Fourier’s law

[B].

Newton’s law of cooling

[C].

Fick’s law

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is
[A].

0.1

[B].

>1

[C].

< 1

[D].

l

Answer: Option A

Explanation:

No answer description available for this question.

Question: While the total emissivity of a perfect black body is unity, the same for a real body is
[A].

0

[B].

1

[C].

> 1

[D].

between 0 and 1

Answer: Option D

Explanation:

No answer description available for this question.