An achromatic doublet of focal length 50 cm is used as an objective of a telescope. The refractive indices of the glasses of the lenes for yellow are

An achromatic doublet of focal length 50 cm is used as an objective of a telescope. The refractive indices of the glasses of the lenes for yellow are 1.6 and 1.5. The radius of curvature of the sides on contact is 15 cm. Find the radii of curvature of the other surfaces. The dispersive powers of the glasses are 0.33 adn 0.24.

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - 45 cm and 12.5 cm

5 views Answered 2023-02-05 15:29

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