Can two identical and independent sodium lamps act as coherent sources? Give reason for your answer.
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No, two independent sources of light cannot act as coherent sources.
Reason: The emission of light is due to millions of atoms. So phase difference between waves emitted from these atoms will change randomly and sustained interference will not be obtained.
Reason: The emission of light is due to millions of atoms. So phase difference between waves emitted from these atoms will change randomly and sustained interference will not be obtained.
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