12th Class Physics Ray Optics Question Bank Ray Optics Conceptual Problems

  • question_answer
    Why does a parallel faced glass slab neither produce dispersion nor deviation?

    Answer:

                    A rectangular glass slab is equivalent to two similar prisms placed with their bases inverted. The deviation and dipersion produced by the two prisms are equal but in opposite directions. So both the net deviation and net dispersion are zero.


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