On this worksheet you will be able to practice using the thin lens equation with spherical lenses. When you focus a camera, you adjust the distance of the lens from the film. A converging beam of light is incident upon the lens directed toward a virtual object o that is 60 cm from the lens. Determine the position of the image generated by a converging lens when its focal length is. In this converging lenses learning exercise, students solve 4 multipart problems to find the focal length, the distance the object will be from the lens, the magnification of the.
What kind of lens do you have if there is 120 written on it. The thin lens equation lenses can be classifi ed as either thick or thin. Look at the lenses in front of you and try to distinguish the different types of lenses. Displaying all worksheets related to thin lens equation. Worksheets are diverging converging lens work, the lens equation, chapter 10 thin lenses, thin lens and magnification equations work, 24 2 thin lenses, thin lenses wp, the refraction of light lenses and optical instruments, thin lenses lab edited. Use the lensmakers equation to determine the focal length of a thin lens. The answers are also calculated and you can see the formulas used to calculate the answers if you move to the appropriate cell. As all who have ever tried lens and mirror calculations know, the biggest difficulty we. Where f focal length, do object distance, and di image distance. Determine the image distance and image height for a 5.
According to this, the equation of thin lens may vary. For the second lens in a system the object size is the image size for the first lens y2 y1. An object placed a certain distance away from a lens will produce an image at a certain distance from the lens, and the thin lens equation relates the image location to the object distance and focal length. Using the lenses in front of you, look at different objects in the laboratory and record your observation. This is the form used in most introductory textbooks.
Worksheets are diverging converging lens work, holt physics diagram skills thin lenses answers pdf, chapter 10 thin lenses, converging diverging lenses ray diagrams, the lens equation, thin lens and magnification equations work, physics 11 05 image formation by lenses name lenses, chapter 2 lens and mirror calculations. Use the thinlens equations to determine location, size, orientation, and nature of the. Long, 1992 thin lenses fundamental paraxial equation for thin lenses a thin lens is one for which thickness is negligibly small and may be ignored. The camera uses a converging lens whose focal length is 0. Snc2d opt07b curved mirror equation worksheet solutions. A derive the thin lens equation in newtonian form is valid see book on page 163. Thin lens equation and problem solving geometric optics. The application of the thin lens equation and the magnification equations to single and compound lens systems will be investigated. Thin lens equation problems monona grove high school. Thin lenses are the most important optical entity in ophthalmic optics. Which one, its doesnt actually matter, because if you want to know whether the focal length is positive or negative, all you have to look at is what type of. To the right of the lens is water refractive index 1.
Science class 12 physics india ray optics and optical instruments refraction in thin lenses. A common gaussian form of the lens equation is shown below. B assuming newtonian form of the thin lens equation, what are x 0 and x i for f100mm and s 0 400mm. Physics stack exchange is a question and answer site for active researchers, academics and students of physics. C calculate the total magnification of the two lens setup in experiment 4. For a thin lens of small aperture, the following relations hold. A lens is made of glass with index of refraction 1. A thin lens has two focal points, one on either side, at equal distances from its center, and should behave the same for light. Showing top 8 worksheets in the category thin lens equation. The formula relating these quantities is the thin lens equation. Focal length, virtual image, real image, object distance, image distance.
From last weeks lab, re ection and refraction, you should already be familiar with the following terms. One side of the lens is flat, and the other is convex with the radius of curvature of 30 cm. Light entering a lens gets refracted twiceonce entering the lens and once exiting ityet in a thin lens the points of entry and. Worksheet thin lens equation worksheet generator by garry. Simply enter another number in cell b4, the red number, and the questions will change. Either form can be used with positive or negative lenses and predicts the formation of both. The focal length, when youve got a thin lens, theres a focal point on each side of the lens. M1y1 the image size after the second lens is found by multiplying the second lens magnification by the size of the object for the second lens y2. The worksheet generator for sale contains 30 questions and an answer sheet. Write down the thin lens equation and give the approximations made to obtain it. Thin lens equation converging and dverging lens ray. The application of the thin lens equation and the magni. An object placed a certain distance away from a lens will produce an image at a certain distance from the lens, and the thin lens equation relates the image location to the object distance.
Students are directed with the rules for drawing ray diagrams, including examples, for finding the image produced by thin lenses. Topics youll need to grasp include how lenses work and examples of how. General physics 2 geometric optics 16 sign conventions focal length positive for converging lenses negative for diverging lenses object distance positive if the object is on the side of the lens from which the light is coming this is usually the case otherwise, it is negative virtual object. Some of the worksheets displayed are diverging converging lens work, the lens equation, chapter 10 thin lenses, thin lens and magnification equations work, 24 2 thin lenses, thin lenses wp, the refraction of light lenses and optical instruments, thin lenses lab edited. Use the thin lens equation to find the distance of the image. A form using the cartesian sign convention is often used in more advanced texts because of advantages with multiplelens systems and more complex optical instruments. M2 y2 m1m2 y1 the system magnification is the final image size divided by the original. This is a worksheet generator for the thin lens equation. Thin lens equation and problem solving video khan academy. Worksheet thin lens equation worksheet generator by.
Showing top 8 worksheets in the category thin lens. A certain slide projector has a 100 mm focal length lens. The distinction between them is dependent on the amount of precision one needs to apply to solve a problem. The thin lens equation and the magnification equation example. Use the worksheet and attached quiz that will test your knowledge of the thin lens equation. On the practice worksheet, students practice drawing their own ray diagrams an. Which lens magnified the object and which made it look smaller.
The image formed by the first lens is treated as the object for the second lens. Convex vs concave lens shape and size at the center. Click on popout icon or print icon to worksheet to print or download. Propagation of errorsbasic rules university of washington.
Note that the total magnification is given by the product of the magnification of. Thin lens ray diagrams practice worksheet with rules tpt. The is the power of lens which is measured in diopters. These two equations can be combined to yield information about the image distance and image height if the object. The thinlens equation and the magnification equation example. For each case, draw the 3 principal rays to locate the image. Measurements are taken from the centre of the lens. Draw a ray diagram and use the information from the ray diagram to fill in the box. Quiz if an object is 12 cm away from a convex lens of focal length 4 cm where will the image be. The focal length is the distance from the center of the lens to one of these focal points. Some of the worksheets displayed are diverging converging lens work, holt physics diagram skills thin lenses answers pdf, chapter 10 thin lenses, converging diverging lenses ray diagrams, the lens equation, thin lens and magnification equations work, physics 11 05 image formation by lenses name lenses.
If a problem states that a virtual image is formed that is twice as large as the object, then you would use the relationship that d i. A form using the cartesian sign convention is often used in more advanced texts because of advantages with multiple lens systems and more complex optical instruments. Determine the focal length of a converging lens in which the object is 7. I shall also make the approximation that lenses are thin. An object is placed 40 cm in front of the lens with the focal length of 50 cm. Thin lens equation worksheets printable worksheets. Test of lens equation for converging lens discussion. In this converging lenses learning exercise, students solve 4 multipart problems to find the focal length, the distance the object will be from the lens, the magnification of the lens, or the height of the image. Create an excel worksheet with the following 6 columns.
In the light ray diagram in figure 10, the object is located in between 1 and 2 focal lengths from the converging lens. According to lensmakers formula, where, f is the focal length of the lens, u is the object distance, and v is the image distance. Lets use the stepalong method to find the image of an object formed by a thin lens. Solve using both a ray diagram and the thin lens equation.