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

  • question_answer
    Sun glasses (goggles) have curved surfaces but they do not have any power. Why?

    Answer:

                    Both the surfaces of sun glasses are equally       curved i.e., \[{{R}_{1}}={{R}_{2}}\]and hence                                 Power, \[P=(\mu -1)\left[ \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right]=0\]


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