A thin equiconvex lens with radii of curvature 220 mm is made of crown glass with refractive indices 1.515 and 1.508 for blue and red light respectively. Find the focal length of the lens and the axial chromatic aberration. A thin plano-concave lens of flint glass is to be used to compensate this chromatic aberration, with the concave face towards the first lens. The refractive indices of flint glass for blue and red light are 1.632 and 1.615 respectively. Find the required radius of curvature of the concave surface and the focal length of the combination.
A thin equiconvex lens with radii of curvature 220 mm is made of crown glass with refractive indices 1.515 and 1.508 for blue and red light respectively. Find the focal length of the lens and the axial chromatic aberration. A thin plano-concave lens of flint glass is to be used to compensate this chromatic aberration, with the concave face towards the first lens. The refractive indices of flint glass for blue and red light are 1.632 and 1.615 respectively. Find the required radius of curvature of the concave surface and the focal length of the combination.
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Transcribed Image Text:A thin equiconvex lens with radii of curvature 220 mm is made of crown glass with refractive indices 1.515 and
1.508 for blue and red light respectively. Find the focal length of the lens and the axial chromatic aberration. A
thin plano-concave lens of flint glass is to be used to compensate this chromatic aberration, with the concave face
towards the first lens. The refractive indices of flint glass for blue and red light are 1.632 and 1.615 respectively.
Find the required radius of curvature of the concave surface and the focal length of the combination.
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