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The focal length of lens, f is related to the object distance, p and image distance, q according to the lens equation. OBJECTIVE: To determine the focal length of a convex lens by using Len’s equation; APPARATUS: Lens holder. Optical bench. Screen. Meter rule. Calculate the focal length using equation (1) and find the average value.
Focal Length of Convex LensB11 Lab Report. Objectives of the experiment: To determine the focal length of a spherical convex lens. ♦ by “Lens formula method” ♦ by “Lens replacement method”. To compare both methods. Theory: In this experiment, we have chosen two methods to find out the focal length of a. spherical lens.
OBJECTIVE: To determine the focal length of a convex lens and to observe real and virtual images formed by convex lenses. MATERIALS: Meter stick Candle Matches. Lens support Convex lens Screen support. 2 meter stick supports Screen. PROCEDURE. 1. Finding the focal length of a convex lens. Put the lens at the center of the meter stick.
To determine the focal length of a thin lens and to explore the difference between convex and concave lenses and to determine their focal lengths. Theory: For a thin lens in air: 𝒇 = 𝒅𝒐 + 𝒅𝒊 f is the focal length, do is the distance between the object and the lens, and di is the distance between the image and the lens. See ...
lens has a smaller focal length. The object is placed slightly beyond the focal point of the objective in a location as to form an enlarged, real image inside the focal point of the eyepiece.
Measure the focal lengths of the two converging lenses L1 and L2 by setting up a real-image configuration on the optical bench, measuring p and q, and then calculating f for each lens as described below.
5 Νοε 2015 · Objective To measure the focal length of convex (positive or convergent) lenses and concave (negative or divergent) lenses. Theory A lens is a transparent object with two refracting surfaces whose central axes coincide. Diverging lenses are concave lenses where the rays diverge.
