$A$ combination of two thin lenses of the same material with focal lengths $f_1$ and $f_2$,arranged on a common axis,minimizes chromatic aberration if the distance between them is:
- A$\frac{f_1 + f_2}{4}$
- B$\frac{f_1 + f_2}{2}$
- C$f_1 + f_2$
- D$2(f_1 + f_2)$
Explore More
Similar Questions
Two lenses having focal lengths in the ratio $f_1:f_2 = 2:3$ are combined to produce no net dispersion. Find the ratio of the dispersive powers of the glasses used.
Medium
View SolutionThe focal length of a lens of dispersive power $0.45$ which should be placed in contact with a convex lens of focal length $84 \,cm$ and dispersive power $0.21$ to make the achromatic combination from the two lenses,in $cm$ is
DifficultAP EAMCET 2011
View SolutionFind the position of the image formed by the lens combination given in the figure.
Medium
View Solution$A$ glass convex lens of focal length $0.1 \ m$ is cut into two equal parts along its axis. The ratio of the focal length of the new lenses is:
Medium
View Solution$A$ convex lens of focal length $30 \ cm$ is placed in contact with a concave lens of focal length $20 \ cm$. An object is placed at $20 \ cm$ to the left of this lens system. The distance of the image from the lens in $cm$ is . . . . . .
DifficultJEE MAIN 2025
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo