The Focal Length Of A Lens Is Inversely Proportional To The Quantity N 1 Where N Is The Index Of Refraction Of The Le 1 (81.29 KiB) Viewed 29 times
The Focal Length Of A Lens Is Inversely Proportional To The Quantity N 1 Where N Is The Index Of Refraction Of The Le 2 (22.81 KiB) Viewed 29 times
The focal length of a lens is inversely proportional to the quantity (n-1), where n is the index of refraction of the lens material. The value of n, however, depends on the wavelength of the light that passes through the lens. For example, one type of flint glass has an index of refraction of n 1.570 for red light and ny = 1.612 in violet light. Now, suppose a white object is placed 24.50 cm in front of a lens made from this type of glass. -
Part A If the red light reflected from this object produces a sharp image 54.50 cm from the lens, where will the violet image be found? di, viol Submit 175] ΑΣΦ Request Answer B ? cm
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