Physics - Geometrical Optics Question with Solution | TestHub

Two identical equi-concave lenses made of glass of refractive index 1.5, placed in contact has power P . When a liquid of refractive index $\mu$ is filled in the gap between the concave lenses, the power of system becomes ' $\mathrm{P}/3$ '. The value of $\mu$ is $\frac{K}{3}$. Find the value of K .