A person can not see the objects beyond 1.2 m distinctly the coorect lens used to restore proper vision is
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Answer:Suppose that light from the yellowregion of the spectrum, with awavelength of say 580 nm, arrives at the retina. It lies between that of red(say 620 nm) and green (550 nm), so this light stimulates both red and green photoreceptors. This evokes a sensation that we are taught to callyellow.
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