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It is desired to make an achromatic combination of two lenses \( \left(\mathrm{L}_{1} \& \mathrm{~L}_{2}\right) \) made of materials having dispersive powers \( \omega_{1} \) and \( \omega_{2}\left(\omega_{1}\right) \). If the combination of lenses is converging then
\( \mathrm{P} \)
(A) \( \mathrm{L}_{1} \) is converging
(B) \( \mathrm{L}_{2} \) is converging
W
(C) Power of \( \mathrm{L}_{1} \) is greater than the power of \( \mathrm{L}_{2} \) (D) None of these
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