ifos • paper_1 • waves_oscillations
[UPSC IFoS 2025] Geometrical Optics (Q121, 8M)
Determine the position of focal points, principal points and nodal points for a spherical lens of radius 20\text{ cm}. The refractive index of the material of the lens is 3/2. Indicate the positions of all the points in a diagram.
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