Will the focal length of a lens for red light be more
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).
19
Nov
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 [...]
A circular disc of radius ‘R’ is placed co-axially and horizontally inside and opaque hemispherical bowl of radius ‘a’, Fig. The far edge of the disc is just visible when viewed from the edge of the bowl. The bowl is filled with transparent liquid of refractive index μ and the near edge of the disc becomes just visible. How far below the top of the bowl is the disc placed ?
19
Nov
A circular disc of radius ‘R’ is placed co-axially and horizontally inside and opaque hemispherical bowl of radius ‘a’, Fig. The far edge of the disc is just visible when viewed from the edge of the bowl. The bowl is filled with transparent liquid of refractive index μ and the near edge of the disc [...]
Will the focal length of a lens for red light be more, same or less than that for blue light ?
19
Nov
Will the focal length of a lens for red light be more, same or less than that for blue light ? same or less than that for blue light ? Will the focal length of a lens for red light be more November 19, 2020 Category: Chapter 9 - Ray Optics and Optical Instruments , [...]