Question:
35 Two identical glass u 3 2 equiconvex lenses of focal
Last updated: 6/13/2023
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35 Two identical glass u 3 2 equiconvex lenses of focal length f are kept in contact The space between the two lenses is filled with water u 4 3 The focal length of the combination is b f 2 a f 4 f 3 f f