at a spherical mirror and suppose PQ is at rightangles to the axis of the mirror. Then the ratio of the lengthpq to the length PQ is called the magnifying power of the mirror.We may put this more briefly by saying that the magnify-ing power is the ratio of the size of the image to the size ofthe… … Fig. 72. the reflected ray, PO a ray incident through the centre of thesphere, and reflected along itself so as to meet RF in p, then,as we have seen, p is the image of P. Join AP and Ap.Since p is the image of P an incident ray PA is reflectedalong Ap. Therefore the angle PAQ is equal to the angle…
Heat · Light
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