Physics · 2025
JEE Main · 4 April 2025, Shift 1 · Q46
Distance between object and its image (magnified by -1/3 ) is 30 cm. The focal length of the mirror used is (x/4) cm, where magnitude of value of x…
Distance between object and its image (magnified by $\displaystyle -\frac{1}{3}$ ) is $\displaystyle 30$ cm . The focal length of the mirror used is $\displaystyle \left(\frac{x}{4}\right) \mathrm{cm}$,
where magnitude of value of $\displaystyle x$ is $\displaystyle \_\_\_\_$
Official answer
From NTA’s final answer key for this paper.
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