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White light is incident on a soap film of refractive index {4}

Question

White light is incident on a soap film of refractive index $\frac{4}{3}$ at an angle of refractive $3 0^{o}$ . The transmitted light is observed to have a dark band for wavelength $6 \times 1 0^{- 5}$ cm. Calculate the minimum thickness of the film.

1.29 \times 1 0^{- 5}

1.29 \times 1 0^{- 3}

2 \times 1 0^{- 3}

2 \times 1 0^{- 5}

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Evelyn Discussed

White light is incident on a soap film of refractive index

\frac{4}{3}

at an angle of refractive

3 0^{o}

. The transmitted light is observed to have a dark band for wavelength

6 \times 1 0^{- 5}

cm. Calculate the minimum thickness of the film.

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Question Text

White light is incident on a soap film of refractive index

\frac{4}{3}

at an angle of refractive

3 0^{o}

. The transmitted light is observed to have a dark band for wavelength

6 \times 1 0^{- 5}

cm. Calculate the minimum thickness of the film.

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