Physics · 2026
JEE Main · 24 January 2026, Shift 1 · Q42
In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm. Total magnification obtained with this system…
In a microscope of tube length $\displaystyle 10$ cm two convex lenses are arranged with focal length of $\displaystyle 2$ cm and $\displaystyle 5$ cm . Total magnification obtained with this system for normal adjustment is $\displaystyle (5)^k$. The value of $\displaystyle k$ is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 2$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.