The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by

giving the surface a mirror finish.

painting the surface white (with aluminium paint).

The heat transfer by radiation from a mild steel surface is to be redu

1.	The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by
A.	painting the surface black.
B.	painting the surface white (with aluminium paint).
C.	giving the surface a mirror finish.
D.	roughening the surface.
Answer» C. giving the surface a mirror finish.

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The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by

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