If you are nearsighted, the lenses that correct your vision are diverging lenses. It’s possible to estimate the focal length of the lens, which correlates with your prescription, by noting the magnification. Jordan holds one lens of her glasses above a coin on the table and estimates a magnification of m = 2/3. She measures the distance from her lens to the coin to be 24 cm. What is the focal length of the lens?

A diverging lens is located 14 cm to the left of a converging lens. A 3.44-cm-tall object stands to the left of the diverging lens, exactly at its focal point. Determine the distance of the final image relative to the converging lens, in cm. Diverging lens 1 focal length = -7 cm Converging lens 2 focal length = 32 cm Object F1 Lens 1 Round to nearest whole number Lens 2 Eye A

You have a thin, diverging lens. If the value of q (the distance from the image to the mirror along the principal axis of the mirror) is -3.57cm and the distance of p (the distance from the object to the mirror along the principal axis of the mirror) is 17.16cm, what is the focal length of the diverging lens? Object Ray 1 Principal focal point Virtual image Diverging lens Ray 1 Ray 3 Ray 2 Secondary focal point |fl ·|fl· Note: Do not explicitly include units in your answer (it is understood the unit is cm). Enter only a number. If you do enter a unit, your answer will be counted wrong.

An optician is designing a contact lens. The material has is an index of refraction of 1.60. In order to yield the prescribed focal length, the optician specifies the following dimensions: inner radius of curvature = +2.56 cm outer radius of curvature = +2.10 cm where the inner radius of curvature describes the surface that touches the eye, and the outer radius of curvature describes the surface that first interacts with incoming light. What is the focal length of this contact lens (in cm)?