Physics · 2021
JEE Main · 16 March 2021, Shift 2 · Q3
The refractive index of a converging lens is 1.4. What will be the focal length of this lens if it is placed in a medium of same refractive index?…
The refractive index of a converging lens is $\displaystyle 1.4$ . What will be the focal length of this lens if it is placed in a medium of same refractive index ? Assume the radii of curvature of the faces of lens are $\displaystyle R_1$ and $\displaystyle R_2$ respectively.
Official answer
(3)
Infinite
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