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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?
Painting the surface black
Painting the surface white (with aluminium paint)
Giving the surface a mirror finish
Roughening the surface
LohaHridoy
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2025-01-04 04:42
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AhmedNazir
Answer: Option 2
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2022-09-01 13:21
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