Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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If Three Identical Prisms Are Combined, is It Possible to Pass a Beam that Emerges Undeviated? Undispersed? - Physics

Short Note

If three identical prisms are combined, is it possible to pass a beam that emerges undeviated? Undispersed?

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No, it is not possible even when prisms are be combined with their refractive angle reversed with respect to each other. There will be at least a net deviation and dispersion equal to the dispersion and deviation produced by a single prism.

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HC Verma Class 11, 12 Concepts of Physics 1
Chapter 20 Dispersion and Spectra
Short Answers | Q 3 | Page 441
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