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The dispersive power of the material of lens of focal length `20cm` is `0.8`. The longitudinal chromatic aberration of the lens is

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The dispersive power of the material of lens of focal length `20cm` is `0.8`. The longitudinal chromatic aberration of the lens is
A. 0.08 cm
B. `0.08//20` cm
C. 1.6 cm
D. 0.16 cm
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by (121k points)
Correct Answer - c
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