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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statement(s).

To make the central fringe at the centre O, a mica sheet of refractive index 1.5 is introduced. Choose the correct statement(s).

a mica sheet of refractive index 1.5 is introduced. Choose the correct statement(s). To make the central fringe at the centre O