Using Lenses. Aims Be able to describe the behavior of light as it passes through a convex lens. Know how to measure the focal length of a convex lens. - ppt download
A point object is placed at distance of 26 m from convex lens of focal length 20cm if a glass slab of thickness t and refractive index 1.5 is inserted between the
Thin Lens Equation
Why is the focal length of thick lens less and focal length of thick lens more? - Quora
The thickness of lens in diagram 2.1 is compare to lens diagram 2.2 thicker The focal length in diagram 2.1 is compare to. - ppt video online download