Physics · 2026
JEE Main · 24 January 2026, Shift 2 · Q41
Distance between an object and three times magnified real image is 40 cm. The focal length of the mirror used is ____ cm.
Distance between an object and three times magnified real image is $\displaystyle 40$ cm . The focal length of the mirror used is $\displaystyle \_\_\_\_$ cm.
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle -15$
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JEE Main 2026 Physics question, with the answer from NTA’s final answer key. Where our answers come from.