On introducing a thin mica sheet of thickness $$2$$×$$10$$−$$6$$ m and refractive index $$1.5$$ in the path of the waves, central bright maxima shifts by 'n' fringes. Wavelength of wave used is $$5000$$ $$A0$$ , then 'n' is

Question

On introducing a  thin mica sheet of thickness $$2$$×$$10$$−$$6$$ m     and refractive  index $$1.5$$ in the path of the waves, central bright maxima shifts by 'n'  fringes.  Wavelength of wave used is $$5000$$ $$A0$$     , then 'n' is

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The given values are  Thickness $$t=2$$×$$10$$−$$6$$ m     Refractive index μ$$=1.5$$     Wavelength λ$$=5000$$ $$A0=5000$$×$$10$$−$$10$$ m      Number of fringes $$n=($$μ−$$1)t$$λ                                            $$=0.5$$×$$2$$×$$10$$−$$65$$×$$10$$−$$7=2$$                                      ∴ $$n=2$$

On introducing a thin mica sheet of thickness $2 \times 10^{- 6} m$ and refractive index 1.5 in the path of the waves, central bright maxima shifts by 'n' fringes. Wavelength of wave used is $5000 A^{0}$ , then 'n' is

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On introducing a thin mica sheet of thickness 2×10−6 m and refractive index 1.5 in the path of the waves, central bright maxima shifts by 'n' fringes. Wavelength of wave used is 5000 A0 , then 'n' is

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On introducing a thin mica sheet of thickness $2 \times 10^{- 6} m$ and refractive index 1.5 in the path of the waves, central bright maxima shifts by 'n' fringes. Wavelength of wave used is $5000 A^{0}$ , then 'n' is