Question
A Young's double slit experiment is performed with white light:
✓
Answer
- The central fringe will be white.
- There will not be a completely dark fringe.
- The fringe next to the central will be violet.
The superposition of all the colours at the central maxima gives the central band a white colour. As we go from the centre to corner, the fringe colour goes from violet to red. There will not be a completely dark fringe, as complete destructive interference does not take place.
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