
Concept explainers
To Explain: An interference pattern does is not produced by two headlights of a car.

Explanation of Solution
Introduction:Interference occurs when two waves reach the same spot. Also, in interference, all the maxima have the same intensity.
Interference pattern is not observed for headlights of car as two sources of light are neither monochromatic nor coherent. So, interference of light will not happen because total reinforcement or a total cancellation at a particular point would not happen.
Conclusion:Headlights of car cannot produce interference pattern because they are neither monochromatic nor coherent sources.
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Physics: Principles with Applications
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