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[" prism "],[" "or wavelength "4000A" is...

[" prism "],[" "or wavelength "4000A" is incident at small and an a prism of apex angle "4" ".The prism has "],[-1,58nr=1.48." The anget aispersion produceby the prism in this inght is: "],[0.2^(@)],[" W."Sec_(1)" tEE Main "]

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