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Sahay Sir > Question Answers > NCERT Exemplar Class 12 > Physics > Chapter 9 - Ray Optics and Optical Instruments > A myopic adult has a far point at 0.1m. His power of accomodation is 4 diopters. (i) What power lenses are required to see distant objects ? (ii) What is his near point without glasses ? (iii) What is his near point with glasses ? (Take the image distance from the lens of the eye to the retina to be 2 cm).

A myopic adult has a far point at 0.1m. His power of accomodation is 4 diopters. (i) What power lenses are required to see distant objects ? (ii) What is his near point without glasses ? (iii) What is his near point with glasses ? (Take the image distance from the lens of the eye to the retina to be 2 cm).

same or less than that for blue light ? Will the focal length of a lens for red light be more