Time to enjoy some colours
During a vacation, the Tan family was at an overseas chemistry laboratory. The chemist was demonstrating to them how an exotic chemical is made. He showed them the following graph:
Mr Tan could work out what colour the chemical was without looking. He realised that it was one of his children's favourite colour and asked whether a sample of that chemical can be kept as a souvenir. Mr Tan was thinking of...
Benedict, Bob, Brenda, Brian or Billy?
The favourite colours of his children are as follows:
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Benedict - green
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Bob - blue
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Brenda - red
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Brian - orange
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Billy - yellow
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1 solution
As you can see from the graph, the maximum absorption is at about 450 nm. In other words, the predominant colour absorbed is blue. However, the colour that it appears as is actually the colour reflected. This colour should be the complementary colour of blue which is orange (on the opposite side of blue on the colour wheel below):
This is B r i a n ′ s favourite colour.