The distance between a slit and a biprism of acute angle `2^(@)` is 10cm. Find the fringe width and the width of the entire band when observation is m

Monjur Alahi

The distance between a slit and a biprism of acute angle `2^(@)` is 10cm. Find the fringe width and the width of the entire band when observation is made on a screen at a distance of 90 cm from the biprism. The refractive index of the material of the biprism is 1.5 and `lambda = 5890Å`.


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Salim Ahmed Kawsar

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Correct Answer - `[0.168 mm, 31.5 mm]

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