Question

which part of a candle flame is non luminous​

Answer 1

$hotter$

this is the answer

Answer 2

⇨ Outer Most Part

☆ Blue coloured zone which is the outer most zone is non - luminous .

☆ Because of complete combustion this zone appears in blue colour .

☆ It's the hottest zone in candle flame when compared to others .

☆ Middle zone - yellow coloured is the most luminous .

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