In a biprism experiment the distance between the 4th and 13th bright fringes is measured when light of wavelength 6000 A.U. is used. On replacing the source of light by another of different wavelength, without disturbing the adjustment of the apparatus, it is found that the distance between the 5th and 15th bright fringes is the same as the distance measured before. What is the wavelength of light used ?
In a biprism experiment the distance between the 4th and 13th bright fringes is measured when light of wavelength 6000 A.U. is used. On replacing the source of light by another of different wavelength, without disturbing the adjustment of the apparatus, it is found that the distance between the 5th and 15th bright fringes is the same as the distance measured before. What is the wavelength of light used ?
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Transcribed Image Text:In a biprism experiment the distance
between the 4th and 13th bright fringes is
measured when light of wavelength 6000 A.U.
is used. On replacing the source of light by
another of different wavelength, without
disturbing the adjustment of the apparatus, it
is found that the distance between the 5th and
15th bright fringes is the same as the distance
measured before. What is the wavelength of
light used?
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