Biology, asked by rhea80, 1 year ago

please help me mates

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Answered by kafka

Answer:option b ) λ1λ2 / λ1 +λ2Explanation:use the formula 1/λ = Z². Rh . (1/n2² - 1/n1²)you will get λ1 = 1/ (1/9 - 1/16) = 144/7 = 20.57λ2 = 1/ (1/4-1/9) = 36/5 = 7.2λ3 = 1/(1/4-1/16) = 16/3 = 5.3333 now substitute values to get answer as option B

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