To photograph a full moon, a photographer uses a single-lens camera with a focal length of 60 mm. What will be the diameter of the Moon’s image on the film?
Answer to relevant QuestionsAn object 5.0 cm tall is 10 cm from a concave lens. The resulting virtual image is one-fifth as large as the object. What is the focal length of the lens and the image distance? To correct myopia (nearsightedness), concave lenses are prescribed. If a student can read her physics book only when she holds it no farther than 18 cm away, what focal length of lens should be prescribed so she can read ...For a lens combination, show that the total magnification Mtotal = M1 M2. A biconvex lens is made of glass whose index of refraction is 1.6. The lens has a radius of curvature of 30 cm for one surface and 40 cm for the other. Calculate the focal length of this lens as used in air and under water. Certain people wear bifocal glasses to improve their near and far vision. If a person can only see things clearly from a distance of 40.0 cm to 80.0 cm from his eyes without glasses, what powers of bifocal glasses should she ...
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