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Question

Four pieces of iron are heated to different temperatures.The colours exhibited by them are respectively red, yellow, orange and white respectively. The one that is heated to the highest temperature will exhibit the colour :

A
White
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B
Yellow
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C
Red
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D
Orange
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Solution

The correct option is A White
White colour means all colours are present.
Hence, maximum energy (highest temperature) corresponds to the piece of iron that exhibits white colour.
(Black colour means zero energy; White colour means maximum energy)

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