(a) Show that if f is the focal length of a thin lens in air, its focal...
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(a) Show that if f is the focal length of a thin lens in air, its focal length in water is
Where nw is the index of refraction of water and n is that of the lens.
(b) Calculate the focal length in air and in water of a double -concave lens of index of refraction n = 1.5 that has radii of magnitude 30 and 35cm.
Transcribed Image Text:
n (n- 1) アミ。
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