Question 29
Dispersion of Light and ColoursWhen a yellow card is observed through a blue glass, the card would appear
- A.black
- B.green
- C.red
- D.white
Show the answer and explanation
Answer: A (black)
Explanation
A yellow card reflects red, green and yellow light but no blue. Blue glass lets only blue through, so no light reaches the eye and the card looks black.