why two independent sources cannot be coherent
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->It is because they have
*Different phase difference
*Light of different wavelength
Due to this they can interfere each other and no corresponding interference pattern could be seen.
*Different phase difference
*Light of different wavelength
Due to this they can interfere each other and no corresponding interference pattern could be seen.
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because for being coherent the sources should be in same phase as wel as same frequency.and practically it is impossible.
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