Physics - Geometrical Optics Question with Solution | TestHub

For a silvered lens, $\frac{1}{f_{eq}}=\frac{-2}{f_L}+\frac{1}{f_M}$. (A) $f_L$ is -ve and $f_M$ is +ve, so $f_{eq}>0$: must be diverging, A-S. (B) $f_L$ is +ve and $f_M$ is -ve, so $f_{eq}<0$: must be converging, B-R. (C) $f_L$ is +ve and $f_M$ is +ve, so $f_{eq}$ can be positive or negative: may be converging or diverging, C-P, Q. Hence option (A).