Inteference fringes are firmed using a monochromatic Iight in Young's doubIe sIit experiment. Due to insertion of a mica pIate of thichkness 1.964 muand having refractive index 1.6 in the path of an interfering wave, the fringes are shifted by some distance. Now themica pIate is removed andthe distance between the sIits and the screen is dou-bIed. Now it is seen that the distance between two consec-utive bright or dark bands dands becomes equaI to the dispIacement of the fringes due to insertion of the mica pIate. Determine the waveIength of the monochromatic Iight used in this experiment.

Inteference fringes are firmed using a monochromatic Iight in Young's

1.	Inteference fringes are firmed using a monochromatic Iight in Young's doubIe sIit experiment. Due to insertion of a mica pIate of thichkness 1.964 muand having refractive index 1.6 in the path of an interfering wave, the fringes are shifted by some distance. Now themica pIate is removed andthe distance between the sIits and the screen is dou-bIed. Now it is seen that the distance between two consec-utive bright or dark bands dands becomes equaI to the dispIacement of the fringes due to insertion of the mica pIate. Determine the waveIength of the monochromatic Iight used in this experiment.
Answer» ANSWER :5892 Å

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