A concave mirror of focal length $f$ in air is dipped in a liquid of refractive index $\mu$. Its focal…

A concave mirror of focal length $f$ in air is dipped in a liquid of refractive index $\mu$. Its focal length in the liquid will be:
  1. $\mu f$
  2. $f$
  3. $\frac{f}{(\mu-1)}$
  4. $\frac{f}{\mu}$

Solution

Focal length of mirror will not change because focal length of mirror doesn't depend on medium.

Asked in: JEE Main 2025 (23 Jan Shift 2)

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