CBSE Class 10 Answered
urgnt
Asked by pritam | 20 Feb, 2011, 11:57: PM
Expert Answer
Dear student,
Hollow prisms are used to study, observe or compare the refraction of light in different liquids of different refractive indices.
| This is a hollow glass prism with hole to allow fluids to be added. Equilateral. Comes with a stopper. |
Passing light through a hollow prism is effectively the same as passing light through two plate glass sheets. On a flat plate, the incoming and outgoing angles are equal and opposite for all wavelengths. Therefore, the dispersion incurred by refraction on the incoming and outgoing surfaces cancels. There is a small residual dispersion because of the spread of wavelengths inside the plate glass.
Hope this helps.
Team
Topperlearning.com
Answered by | 21 Feb, 2011, 12:28: PM
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