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Question
A red rose is seen in green light. It will appear ______.
Options
red
blue
yellow
black
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Solution
A red rose is seen in green light. It will appear black.
Explanation:
A red rose is seen in green light. It will appear black. This is because a red object reflects red light and absorbs other colours. Since green light contains no red wavelengths, the rose absorbs all the green light and reflects none, making it appear black.
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