A converging lens had a focal length f 51cm for blue light
A converging lens had a focal length f = 51cm for blue light (n=1.57). The index of refraction of this lens for red light is n = 1.49. What is the focal length for red light?
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a converging lens had a focal length f 51cm for blue light n157nbsp the index of refraction of this lens for red light
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