111 Figure 34-56 shows a beam ex- pander made with two coaxial con- verging lenses of focal lengths fi and h and separation d = fi + f2. The de- vice can expand a laser beam while keeping the light rays in the beam parallel to the central axis through the lenses. Suppose a uniform laser beam of width W; = 2.5 mm and in- tensity 1, = 9.0 kW/m? enters a beam expander for which f = 12.5 cm and f2 = 30.0 cm. What are (a) Wrand (b) I,of the beam leaving the expander? (c) What value of d is needed for the beam expander if lens 1 is replaced with a diverging lens of focal length fi = -26.0 cm? W; Figure 34-56 Problem 111.

111 Figure 34-56 shows a beam ex- pander made with two coaxial con- verging lenses of focal lengths fi and h and separation d = fi + f2. The de- vice can expand a laser beam while keeping the light rays in the beam parallel to the central axis through the lenses. Suppose a uniform laser beam of width W; = 2.5 mm and in- tensity 1, = 9.0 kW/m? enters a beam expander for which f = 12.5 cm and f2 = 30.0 cm. What are (a) Wrand (b) I,of the beam leaving the expander? (c) What value of d is needed for the beam expander if lens 1 is replaced with a diverging lens of focal length fi = -26.0 cm? W; Figure 34-56 Problem 111.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A certain camera lens has a focal length of 175 mm. Its position can be adjusted to produce images when the lens is between 180. mm and 210. mm from the plane of the film. Over what range of object distances is the lens useful?
(c) Used in its prime focus configuration, the Russian BTA telescope, with a 6.05 m parabolic primary mirror, has a focal length of 24.0 m. If a coma corrector is not employed, calculate the linear diameter of the "useful field" on this telescope, i.e. the diameter on the focal plane within which the coma blur is less than 1 arcsecond.
Q3) If n: > n¡ and the thickness of the material slab is = t, then answer the following questions: a) Analytically, show that ray 1 and ray 4 are parallel. b) Analytically, show that ray 2 and ray 3 are parallel. c) Find the total lateral displacement (d) in terms of nt and t of the material. гay1 Aray2 aray3 ne ni ray4
1
Please Asap
The power in Diptera of the spectacle lens that will enable a near-sighted person to see distant objects clearly is -2D. What is the maximum distance the person can see without wearing the contact lens?
Figure 25–48 was taken from the NIST Laboratory (National Institute of Standards and Technology) in Boulder, CO, 2.0 km from the hiker in the photo. The Sun's image was 15 mm across on the film. Estimate the focal length of the camera lens (actually a telescope). The Sun has diameter 1.4 × 10° km, and it is 1.5 × 10* km away. GURE 25–48 oblem 68.
Suppose a person's eyes have a relaxed power of 50.62 D. Assume a 2.00 cm distance from the retina to the lens of the eye. What is the far point of the person in m?
An object is piaced1.6cmin front of the Covnea (ine cornea is thin and has approximately parallelsi1der so that the véfiection thdt Occurs as light travels from air t0 Cornea to aquious numor has essentially the same as though the aqueous numor were divectly in contact With the air. The agueous numuv has Index Of retractlon n= / 34 and the radius of curvature Of cornea is 7.smm) O what IS the Image distance For the Image Furmed by the cornea alone? B The Image Formed by the Cornea serves as an objeCF for the lens. Treat the lens as a thin lens mm benina the cornea. Flnd the op Hcal power Of the lens necessary to furm an image on the reina 30 mm from the linter Of the lens.
Example 23-9 : Image formed by a converging lens. What are (a) the position, and (b) the size, of the image of a 7.6-cm-high leaf placed 1.00 m from a +50.0-mm-focal-length camera lens?
hi please solve this question , make sure its correct In X-ray imaging, to achieve a well-defined small area of X-ray beam, the anode of the X-ray tube is usually bevelled. By assuming that the bevel angle is 15° and the distance between the X-ray source and the patient is 30 cm, (i) Determine the width of actual focal spot needed to achieve the effective focal spot of 1 mm. (ii) Calculate the coverage of the X-ray beam
A laser beam of diameter d₁-1.1 mm is directed along the optical axis of a thin lens of focal length +4.7 cm (see figure below). (a) How far from the lens will the beam be focused? (b) A second positive lens is placed to the right of the first. Light emerges from the second lens in a parallel beam of diameter dy 3.6 mm. Thus the combination of lenses acts as a beam expander. Find the focal length of the second lens. Find the distance between the lenses.