CBSE Class 10 Sample Paper Science Solution - For 2023 Boards

How will you use two identical prisms so that a narrow beam of white lightincident on one prism emerges out of the second prism as white light? Draw the diagram.



  • We use 2 prisms one upright and the other inverted to achieve given result. 
  • The first prism splits the white light into seven colours due to different angles of deflection.
  • The second prism combines the spectrum into a single ray of white light as the colours again combine in the emergent light.


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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo