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Question

A piece of paper appears black in sunlight, how will it appear in the red light?
  1. Black
  2. Red
  3. White
  4. Orange


Solution

The correct option is A Black
The sunlight is a combination of seven colours. These colours are violet, indigo, blue, green, yellow, orange and red (VIBGYOR). When it falls on a black coloured object, all the colours are absorbed and reflects no light. So even when it is observed in red light, it will appear black as it reflects no light.

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