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CBSE Class 10 Answered

how focal length changes when light travels from red monochromatic light to blue monochromatic light
Asked by | 30 Aug, 2008, 01:10: PM
answered-by-expert Expert Answer

the refractive index is of a glass is maximum for the violet light and minimum for the red light. the ray of light bends less as compared to the ray of light of violet color.hence if refractive index  decreases focal length  increases

Answered by | 01 Sep, 2008, 04:15: PM

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