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ganeshie8 (ganeshie8):
show that f = r/2 in part a of the shown figure
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ganeshie8 (ganeshie8):
ganeshie8 (ganeshie8):
sorry, this question is incomplete... requires some context of spherical mirrors...
imqwerty (imqwerty):
|dw:1456734592352:dw| yes well the focus is not exactly R/2
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