If the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen. If the screen is anywhere else, the object will look blurry or won't be seen. The optical table has a meter-tape attached to the side, to give the position of the items. If the object is in a wrong position, the lens will defocus the light -- spread it out. That means that the screen can't be placed anywhere to display a focused image. If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out. (There are infinitely many such positions.)

If the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen. If the screen is anywhere else, the object will look blurry or won't be seen. The optical table has a meter-tape attached to the side, to give the position of the items. If the object is in a wrong position, the lens will defocus the light -- spread it out. That means that the screen can't be placed anywhere to display a focused image. If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out. (There are infinitely many such positions.)

Similar questions

A thin biconvex spherical lens has a radius of curvature of 100 cm and 20.0 cm. The lens is made of glass with a refractive index of 1.54 and is immersed in air. a) If an object is placed 70.0 cm from a surface of radius of curvature 100 cm, locate and describe the characteristics of the resulting image. b) Determine the transverse magnification of the image. Sketch a ray diagram for this situation.
An object measures 4cm high above the axis of an optical system consisting of a 2-cm aperture stop and a thin convex lens of 6-cm focal length and 5-cm aperture. The object is 14 cm in front of the lens and the stop is 2.50cm behind the lens. Determine the position and size of the entrance and exit pupils, as well as the image. Sketch the chief ray and the two extreme rays through the optical system, from the top of the object to its conjugate image point.
One method of measuring the focal length of a lens is to form an image of an object that is many focal lengths away from the lens. Show from equation (1/f=1/o+1/i) that the image distance is approximately equal to the focal length when the object distance is very large (say, o=100f). What happens when the object distance become infinitely far away?
When a patient is being fitted with contact lenses, the curvature of the patient's cornea is measured with an instrument known as a keratometer. A lighted object is held near the eye, and keratometer measures the magnification of the image formed by the reflection from the front of the cornea. If an object is held 10.0cm in front of a patient's eye, and the reflected image is magnified by a factor of 0.035, what is the radius of curvature of the patient's cornea?
Mehlo
The focal length of a diverging lens is negative. If f = −30 cm for a particular diverging lens, where will the image be formed of an object located 36 cm to the left of the lens on the optical axis? cm to the left of the lensWhat is the magnification of the image?
The focal length of a diverging lens is negative. If f= -26 cm for a particular diverging lens, where will the image be formed of an object located 53 cm to the left of the lens on the optical axis? cm to the left of the lens What is the magnification of the image?
not a graded assignment
Please don't provide handwritten solution.... A diverging lens with f = -37.5 cm is placed 15.0 cm behind a converging lens with f = 21.0 cm .Where will an object at infinity be focused? Determine the image distance from the second lens. Follow the sign conventions.
A lens of focal length 42 mm is used as a magnifier. The object being viewed is 6.8 mm long, and is positioned at the focal point of the lens. The lens is moved closer to the object, so that the image is now 15 cm from the lens. The distance the lens has been moved, in cm, is closest to: