Light waves are emitted by a common source. F | vedclass

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(D) Light waves emitted by a common source are not perfectly monochromatic and continuous. Due to the nature of atomic transitions,light is emitted in

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$10^{-8} \, s$

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(D) Light waves emitted by a common source are not perfectly monochromatic and continuous. Due to the nature of atomic transitions,light is emitted in the form of wave trains. The duration of a single wave train is known as the coherence time. For typical light sources,this coherence time is approximately $10^{-8} \, s$. Within this time interval,the phase of the light wave remains constant. Therefore,the correct option is $D$.

Light waves are emitted by a common source. For what time interval will the phase remain constant?

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