Q-22-23.20 Homework – Unanswered. Due in 5 days A convex lens of focal length 5 cm...
A magnifying glass is a single convex lens with a focal length of ff = 13.0 cm . What is the angular magnification when this lens forms a (virtual) image at the person's near point (assumed to be 25 cm)? M =
1) A magnifying glass has a convex lens with a focal length of 12 cm. A rock is placed 30 cm away from the lens. What is the magnification factor of the rock? 2) A laser has a wavelength of 1064 nm in air. It enters some diamond with an index of refraction of 2.42. What is the wavelength of the light in the diamond? a. 530 nm b. 2600 nm c. 440 nm d. 100 nm e. 1060 nm
You place a 22-cm focal length convex lens at a distance of 50 cm in front of a concave lens with a focal length of -40 cm. Then you place a small lightbulb (2 cm tall) 27 cm in front of the convex lens. Determine the distance from the second lens to the final image Express your answer with the appropriate units s'= it is NOT 20.44 or -20.44 cm
The focal length of a convex lens is given to be 17 cm. It's magnification is -2.5. (a) What is the distance of the object and image from the lens? (b) What is the image height if the object is 15 cm? (c) Draw a ray diagram for this situation, label completely.
A doctor examines a mole with a 15.6 cm focal length magnifying glass held 11.7 cm from the mole. (a) How far is the image from the lens? Can you write the thin lens equation which gives a relationship between the focal length of a lens, the object distance, and the image distance? If the image distance is negative, what can you conclude about the image? cm Is the image real or virtual? realvirtual (b) What is its magnification? (c)...
In the geometrical optics experiment, a student used a convex lens with 6 cm focal length to produce a large image of an object. The object was placed at a distance of 14 cm from the lens. What is the magnification of the image? include the sign.
A convex lens has a focal length of 14.5 cm. Where on the lens axis should an object be placed in order to get a virtual, enlarged image with a magnification of 1.70? Answer in cm.
Can someone help me on this practice physics exam? 9. A magnifying glass has a convex lens of focal length 15 cm. (a) Draw the ray diagram that shows an object being magnified by this lens. (b) At what distance from a postage stamp should you hold this lens to get a magnification of +2?
2. A convex lens of focal length 24 cm and refractive index of glass is 1.5. Find the foca length of this lens if it is totally submerged into water of refractive index 1.33. A far sighted person cannot see objects clearly that are closer to the eye than 73 cm Determine the focal length of contact lenses that will enable this person to read a magazine at a distance of 25 cm. 4.
An object is placed 6 cm from a convex lens of focal length 18 cm. what is the lateral magnification of the object.