Three thin lenses, each with a focal length of 40.0 cm, are aligned on a common axis; adjacent lenses are separated by 52.0 cm. Find the position of the image of a small object on the axis, 80.0 cm to the left of the first lens.

Two convex lenses A and B, each of focal length 25 cm, are placed 80 cm apart on the same axis. A 12 cm high object is placed 50 cm in front of lens A. Find the position and size of the final image.

An optical technician mounts two thin lenses along a single optical axis (the lenses are at right angles to the line connecting them, and they appear concentric when viewed from either end). The lenses are identical, each with a positive (converging) focal length of +14.8 cm. They are separated by a distance of 39.4 cm. Lens 1 is to the left of Lens 2. In order to evaluate the lens combination as a single optical instrument, the technician places an object 30.0 cm in front of (to the left of) Lens 1. (a) What is the final image's distance (in cm) from Lens 2? (Omit any sign that may result from your calculation.)  Review the thin-lens equation and rearrange it to yield image location when object location and focal length are known. Use the equation twice: first to locate the image formed by Lens 1, and then to locate the image formed by Lens 2 (using the image from Lens 1 as an object for Lens 2). Double-check your arithmetic and keep close track of signs. cm (b) Where is the…

(a) A 1.00 cm-high object is placed 3.80 cm to the left of a converging lens of focal length 7.30 cm. A diverging lens of focal length −16.00 cm is 6.00 cm to the right of the converging lens. Find the position and height of the final image. position____cm   height____cm Is the image inverted or upright?   Is the image real or virtual?   (b) What If? If an image of opposite characteristic, i.e., virtual if the image in part (a) is real and real if the image in part (a) is virtual, is to be obtained, what is the minimum distance (in cm), and in which direction, that the object must be moved from its original position? distance____cm

A lens forms an image of an object. The object is 16.0 cm from the lens. The image is 12.0 cm from the lens on the same side as the object. (a) What is the focal length of the lens? Is the lens converging or diverging? (b) If the object is 8.50 mm tall, how tall is the image? Is it erect or inverted? (c) Draw a principal-ray diagram.

A camera is supplied with two interchangeable lenses, whose focal lengths are 25.0 and 110.0 mm. A woman whose height is 1.879m stands 8.60 m in front of the camera. What is the height (including sign) of her image on the film, as produced by each of the following.

Converging lenses A and B, of focal lengths 8.0 cm and 6.0 cm, respectively, are placed 36.0 cm apart. Both lenses have the same optic axis. An object 8.0 cm high is placed 12.0 cm to the left of lens A. Find the position, size, and orientation of the image produced by the lenses in combination.

You have two lenses at your disposal, one with a focal length f1 = 44.0 cm, the other with a focal length f2 = -44.0 cm. If you want to produce an image of the bulb that is enlarged by a factor of 1.70, how far from the wall should the lens be placed? Express your answer with the appropriate units.

An astrophysicist mounts two thin lenses along a single optical axis (the lenses are at right angles to the line connecting them, and they appear concentric when viewed from either end). The lenses are identical, each with a positive (converging) focal length of +15.2 cm. They are separated by a distance of 40.3 cm. Lens 1 is to the left of Lens 2. In order to evaluate the lens combination as a single optical instrument, the teacher places an object 30.0 cm in front of (to the left of) Lens 1. (a)What is the final image's distance (in cm) from Lens 2? (Omit any sign that may result from your calculation.) cm (b)Where is the final image located? behind (to the right of) Lens 2between Lens 1 and Lens 2    in front of (to the left of) Lens 1 (c)What is the overall magnification of the lens pair, considered as a single optical instrument?

I need Help please.