Interference fringes are observed with a biprism of reflecting angle 1 degree and refractive index 1.5 on a screen 80 cm away from it. If the distance between the source and the biprism is 20 cm, calculate the fringe width when the wavelength of light used is 6900 angstrom.
Interference fringes are observed with a biprism of reflecting angle 1 degree and refractive index 1.5 on a screen 80 cm away from it. If the distance between the source and the biprism is 20 cm, calculate the fringe width when the wavelength of light used is 6900 angstrom.
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Interference fringes are observed with a biprism of reflecting angle 1 degree and refractive index 1.5 on a screen 80 cm away from it. If the distance between the source and the biprism is 20 cm, calculate the fringe width when the wavelength of light used is 6900 angstrom.
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