MCQ
The chromatic Aberration in lenses becomes due to
- ADisimilarity of main axis of rays
- BDisimilarity of radii of curvature
- ✓Variation of focal length of lenses with wavelength
- DNone of these
✓
Answer
Correct option: C.
Variation of focal length of lenses with wavelength
c
( c)$f \propto \frac{1}{{\mu - 1}}$ and $\mu \propto \frac{1}{\lambda }.$
( c)$f \propto \frac{1}{{\mu - 1}}$ and $\mu \propto \frac{1}{\lambda }.$
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