What is achromatic condition?
Answer. Condition for achromatism is that " The ratio of the dipersive power must be equal to the ratio of the focal length of the two lenses." i.e, w1/w2 = f1/f2 where, w1 and w2 are the dispersive power of the two lenses and f1 and f2 are the focal lengths.Jan 19, 2016
Answer. Condition for achromatism is that " The ratio of the dipersive power must be equal to the ratio of the focal length of the two lenses." i.e, w1/w2 = f1/f2 where, w1 and w2 are the dispersive power of the two lenses and f1 and f2 are the focal lengths.Jan 19, 2016
