The convex surface of a plano-convex glass lens with curvature radius `R = 40 cm` comes into contact with a glass plate. A certain ring observed in reflected light has a radius `r = 2.5 mm`. Watching the given ring, the lens was gradually removed from the plate by a distance `Delta h = 5.0 mu m`. What has the radius of that ring become equal to?

The convex surface of a plano-convex glass lens comes into contact with a glass plate. The curvature radius of the lens's convex surface is R , the wavelength o flight is equal to lambda . Find the width Delta r of a Newton ring as a function of its radius r in the region where Delta r lt lt r .

At the crest of a spherical surface of a plano-convex lens there is a ground-off plane spot of radius r_(0) = 3.0mm through which the lens comes into contact with a glass plate. The curvature radius of the sixth bright ring when observed in reflected light with wavelength lambda = 655 nm .

The spherical surface of a plano-convex lens comes into contact with a glass plate. The space between the lens and the plate is filled up with carbon dioxide. The refractive indies of the lens, carbon dioxide, and the plate are equal to n_(1) = 1.50, n_(2) = 1.63 , and n_(3) = 1.70 respectively. the curvature radius of the spherical surface of the lens is equal to R = 100 cm . Determine the radius of the fifth dark Newton's ring in reflected light with wavelength lambda = 0.50 mu m .

A plano-convex glass lens with curvqature radius of spherical surface R = 12.5 cm is pressed against a glass plate. The diameters of the tenth and fifteenth dark Newton's rings in reflected light are equal to d_(1) = 1.00 mm and d_(2) = 1.50 mm . Find the wavelength of light.

Find the radius of curvature of convex surface of a plano convex lens, whose focal length is 0.3 m and mu = 1.5 .

The refractive index and the focal length of a plano convex lens are 1.5 and 50 cm respectively. What is the radius of curvature of the curved surface ?

Surfaces of a thin equi-convex glass lens have radius of curvature R. Paraxial rays are incident on it . If the final image is formed after n internal reflections, calculate distance of this image from pole of the lens. Refractive index of glass is mu .

Surfaces of a thin equi-convex glass lens have radius of curvature R. Paraxial rays are incident on it . If the final image is formed after n internal reflections, calculate distance of this image from pole of the lens. Refractive index of glass is mu .

The convex lens of a thin plano-convex lens (mu=1.5) with R=60cm is silvered to obtain a concave mirror. An object is located at a distance 25 cm in front of this mirror, find the distance of the image from mirror.