Physics 9702 · AS & A Level · Interference

Interference — practice question

A student tries to demonstrate light interference using two matching green LEDs. Which statement explains why this experiment will not work?

  • AThe light waves from the sources are not coherent.
  • BThe light waves from the sources do not have the same amplitude.
  • CThe light waves from the sources have a range of wavelengths.
  • DThe light waves from the sources are not monochromatic.

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