Exam-style question
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What is the consequence of observing an interference pattern in Young's double-slit experiment?.
- A.It proves light can only behave as a particle.
- B.It indicates light has wave properties.
- C.It shows light travels in straight lines.
- D.It suggests light cannot be polarized.
Model answer
What a good answer should say
- It indicates light has wave properties.
Explanation
Why this works
The cause is the observation of alternating bright and dark fringes on the screen. The mechanism involves the interference of light waves from the two slits, leading to regions of constructive and destructive interference.
The effect is the clear pattern formed, which indicates that light behaves as a wave, thus supporting the wave model of light.
Common mistake
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