Red light is allowed to fall on a blue object. It will appear:

Red

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Blue

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Black

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None of these

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Solution

The correct option is C Black
The object appears blue because it reflects blue colour while absorbing all other colours. So when red light falls on it, it will absorb the red light and appear black.

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When the red light is allowed to fall on a blue object, It will appear ___ in colour.

An object appear blue in white light. Of what colour will it appear in red light?

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