Optics Question 702

Question: The dispersive power of the material of lens of focal length 20 cm is 0.08. The longitudinal chromatic aberration of the lens is

[EAMCET 2005]

Options:

A) 0.08 cm

B) 0.08/20 cm

C) 1.6 cm

D) 0.16 cm

Show Answer

Answer:

Correct Answer: C

Solution:

Longitudinal chromatic aberration = $ \omega f=0.08\times 20 $

$ =1.6cm $ .



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