Which of the following is not a problem for refracting telescopes? O A. Different wavelengths of light are focused at slightly different locations. O B. The quality of the glass lens in transparency and in the shape of both surfaces must be C. The secondary mirror blocks some of the light passing through the primary lens. D. The primary lens can only be supported at the edges making deformation of large lens

Multiple choice. With a lens, an image is formed as a result of?a. Reflectionb. Refractionc. Diffraction

A converging lens with a focal length of 40 cm and a diverging lens with a focal length of -40 cm are 160 cm apart. A 2.0-cm-tall object is 60 cm in front of the converging lens.a. Use ray tracing to find the position and height of the image. To do this, accurately use a ruler or paper with a grid. Determine the image distance and image height by making measurements on your diagram.b. Calculate the image height and image position relative to the second lens. Compare with your answers in part a.

w9-9 A converging lens has a focal length of 8.00 cm. What is the nature of the image formed when the object is placed at a distance of 20.0 cm from the lens? a. real, inverted, and diminished b. virtual, upright, and enlarged c. real, inverted, and enlarged d. virtual, upright, and diminished

A 5.0-mm focal-length objective lens and 60-mm focal-length eyepiece in a simple microscope are separated by a distance of 30 cm. If a human blood cell on a microscope slide is located 0.10 mm behind the focal length of the objective lens, what is the magnification of the microscope?   a. 400   b. 300   c. 200   d. 600   e. 500

Light from a pencil is refracted through a double convex (converging) thin lens. The pencil is at a distance of 30 cm from the lens and has a height of 15 cm. The focal length of the lens is 10 cm. a) Draw a sketch of the problem including the object, the lens, the image, and all rays you are using to produce it. Label the various quantities and points with their appropriate variable names (s, s', y, y', f, F, etc.). b) Calculate the distance of the image from the lens. c) The lens has radii of curvature equal to 40 cm. Calculate the index of refraction of the material of the lens. d) Calculate the height of the image, and establish whether it is erect or inverted, and whether it is real or virtual. e) Calculate the lateral magnification.

In a refracting telescope, spherical aberration limits a. The focal length of the eyepiece b. Chromatic aberration c. The diameter of the objective lens d. The total focusing power of the telescope e. The length of the telescope

A lens forms an image that is upright 14 cm on the same side of the lens as the object. The image is 5.0 cm high. The object is 6.0 cm high. A. Find the object's distance. B. What type of lens was it? C. Describe the image using L-O-S-T.

When light passes through a convex lens, which of the following causes it to bend? I. the change in index of refraction II. the shape of the lens   A. Both I and II B. I only C. II only D. Neither I or II

Ch24,MC3