kerjakan 1. Sebuah benda diletakkan 15 cm di depan lensa cekung, ternyata bayanganterbentuk pada jarak 6 cm di depan lensa.Tentukan :a. Jarak fokusb. Kekuatan lensanya sebesar .....c. Lukis bayangan2. Sebuah benda diletakkan di muka lensa cembung dengan jarak fokus 12 cm.bayangan berada di depan lensa dengan perbesaran 3 kali.Tentukan:a. Jarak benda dari lensa.b. Lukis bayangan pada lensac. Sifat bayangan3. Sebuah lensa cembung mempunyai jarak fokus 20 cm menghasilkanbayangan nyata pada jarak 120 cm.Tentukan :a. Jarak bendab. Perbesaran bayanganc. Kekuatan lensad. Lukis bayangannya4. Sebuah benda terletak pada jarak 10 cm di depan lensan cekung yang titikfokusnya berjarak 15 cm.Tentukan :a. Bayangan yang terbentukb. Perbesaran bayangannyac. Lukis bayangannya

Approach to solving the question:✅ General Goal:You're solving lens problems using formulas and…

Answered: 1. Sebuah benda diletakkan 15 cm di…

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter9: Optics

Section: Chapter Questions

Problem 1OEA: Give three advantages that the Fresnel lens design has over that of a conventional lens with the...

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Similar questions

Give three advantages that the Fresnel lens design has over that of a conventional lens with the same size and focal length.
A camera lens used for taking close-up photographs has a focal length of 22.0 mm. The farthest it can be placed from the film is 33.0 mm. (a) What is the closest object that can be photographed? (b) What is the magnification of this closest object?
If the lens of a person’s eye is removed because of cataracts (as has been done since ancient times), why would you expect a spectacle lens of about 16 D to be prescribed?
A person with presbyopia has lost some or all of the ability to accommodate the power of the eye. If such a person’s distant vision is corrected with LASIK, will she still need reading glasses? Explain.
. (a) In a camera equipped with a 50-mm focal-length lens, the maximum distance that the lens can be from the film is 60 mm. What is the smallest distance an object can be from the camera if its image on the film is to be in focus? What is the magnification? (b) An extension tube is added between the lens and the camera body so that the lens can be positioned 100 mm from film. How close can the object be now? What is the magnification?
A 7.5x binocular produces an angular magnification of 7.50, acting like a telescope. (Mirrors are used to make the image upright.) If the binoculars have objective lenses with a 75.0 cm focal length, what is the focal length of the eyepiece lenses?
. If the mirror described in the previous problem is used to form an image of the same object now located 16 cm in front of the mirror, what would the new image position be? Assuming that the magnification equations developed for lenses also apply to mirrors, describe the image (size and orientation) thus formed.
Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a 800 mm focal length telephoto lens?
A 7.5 binocular produces an angular magnification of —7.50, acting like a telescope. (Mirrors are used to make the image upright.) If the binoculars have objective lenses with a 75.0-cm focal length, what is the focal length of the eyepiece lenses?
A large reflecting telescope has an objective mirror with a 10.0 m radius of curvature. What angular magnification does it produce when a 3.00 m focal length eyepiece is used?
What is the power in diopters at a camera lens that has a 50.0 mm focal length?
What is the magnification of a magnifying lens with a focal length of 10 cm if it is held 3.0 cm from the eye and the object is 12 cm from the eye?

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