How does the power of a convex lens vary, if the incident red light is replaced by violet light?
How does the power of a convex lens vary, if the incident red light is replaced by violet light?
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Power of a lens increases if red light is replaced by violet light because P = 1/f = (ang - 1)(1/R1 - 1/R2), and refractive index is maximum for violet light in visible region of spectrum.
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