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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 of water/4/3).the focal length of the combination is? |
| Answer» 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 of water/4/3).the focal length of the combination is? | |