2 lenses in contact made of materials with dispersive powers in the ratio 2:1, behave as an achromatic convex lens of focal length 10cm. The individual focal length of the lenses are
Blessy Mariya Joseph , 6 Years ago
Grade
1 Answers
Eshan
Last Activity: 6 Years ago
Dear student,
Since the dispersive powers are in the ratio 2:1, so are the magnitudes of focal lengths.
Hence
Also the focal length of combination is 10cm.
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