Consider a converging lens whose focal length is 6.71 cm. An object is placed on the axis of the lens at a distance of 10.5 cm from the lens. How far is the object's image from the lens? image distance: cm

Using a single optic with a positive focal length, an image is created. As a result, which of the following MUST be true? Choose all that apply. The image is real The image is virtual The image is inverted O The image is upright The image distance is positive The image distance is negative The image height is positive The image height is negative The image has a positive magnification The image has a negative magnification The optic is converging The optic is diverging

A spherical concave lens has a focal length of 50 cm, and an object is placed 20 cm from the lens. Draw a ray diagram. (Submit a file with a maximum size of 1 MB.) Choose File No file chosen Estimate the image distance. cm

In the following three scenarios, an object is located on one side of a converging lens. In each case, you must determine if the lens forms an image of this object. If it does, you also must determine the following. whether the image is real or virtual whether the image is upright or inverted the image's location, q the image's magnification, M The focal length is  f = 60.0 cm  for this lens. Set both q and M to zero if no image exists. Note: If q appears to be infinite, the image does not exist (but nevertheless set q to 0 when entering your answers to that particular scenario). (a) The object lies at position 60.0 cm. (Enter the value for q in cm.) q= cmM= Select all that apply to part (a).  realvirtualuprightinvertedno image (b) The object lies at position 7.06 cm. (Enter the value for q in cm.) q= cmM= Select all that apply to part (b).  realvirtualuprightinvertedno image (c) The object lies at position 300 cm. (Enter the value for q in cm.) q= cmM= Select all that…

You have a lens whose focal length is 12.9 cm. You place an object on the axis of the lens at a distance of 6.27 cm from it. How far is the object's image from the lens?

For a thin lens situaiton, you have detemined the image distance is negative. Which of the following must be true?     the image is real, it is on the opposite side as the object     the image is virtual, it is on the same side as the object     the image is real, it is on the same side as the object     the image is virtual, it is on the opposite side as the object

An optical bench is set up as shown in the figure. The object of height 2.5 cm is placed at x = 3 cm on the optical bench, a convex lens is placed at x = 28 cm on the optical bench, and a concave lens is placed at x = 45 cm on the optical bench. The convex lens has a focal length of 14 cm, and the concave lens has a focal length of -18 cm. convex concave screen object lens lens X 3 cm 28 cm 45 cm ? cm (a) What is the object distance for the convex lens, in cm? (b) What is the image distance for the convex lens, in cm? (c) What is the "magic number", i.e., the position of the image formed by the convex lens only, in cm? (d) What is the object distance for the concave lens, in cm? (e) What is the image distance for the concave lens, in cm? (f) What is the position of the screen for which the image will be in focus with both lenses in place, in cm?

An object 1.40 cm high is held 3.00 cm from a person's cornea, and its reflected image is measured to be 0.167 cm high. What is the magnification? magnification: Where is the image? image distance: cm Find the magnitude of the radius of curvature of the convex mirror formed by the cornea. magnitude of radius of curvature: cm Note: This technique is used by optometrists to measure the curvature of the cornea for contact lens fitting. The instrument used is called a keratometer, or curve measurer.

An object is placed 36 cm in front of a converging lens with a focal length of 20 cm. Draw a ray diagram.   Estimate the image distance (in cm). (Give your answer as a distance from the center of the lens.) ________ cm

The objective lens of a microscope is a planoconvex (flat on one side) lens that has a short focal length of 7.6 mm. The focusing knob on the microscope moves the object toward or away from the objective lens. The microscope is designed so that the object will be seen in focus through the eyepiece when the objective lens forms a real image of the object 160 mm behind the objective lens. (a) At what object distance in mm is the microscope focused? (b) What is the lateral magnification of the objective lens?(c) Account for the resulting image shown in the figure, i.e. using your calculations, justify that indeed the image is real, magnified, and inverted.