White light is incident on a soap film at an angle of sin^(-1(4)/(5)) and the reflected light on examination by the spectroscope shows dark bands. The consecutive dark bands corresponds to wavelength 6100 Å and 6000 Å. If the refractive index of the film is 4/3, calculate its thickness.

White light is incident on a soap film at an angle of sin^(-1(4)/(5))

1.	White light is incident on a soap film at an angle of sin^(-1(4)/(5)) and the reflected light on examination by the spectroscope shows dark bands. The consecutive dark bands corresponds to wavelength 6100 Å and 6000 Å. If the refractive index of the film is 4/3, calculate its thickness.
Answer» ANSWER :`1.716xx10^(-3)`CM

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White light is incident on a soap film at an angle of sin^(-1(4)/(5)) and the reflected light on examination by the spectroscope shows dark bands. The consecutive dark bands corresponds to wavelength 6100 Å and 6000 Å. If the refractive index of the film is 4/3, calculate its thickness.

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