Physics - Geometrical Optics Question with Solution | TestHub

The image of an object placed in air formed by a convex refracting surface is at a distance of$10 \mathrm{m}$behind the surface. The image is real and is at$\frac{2^{rd}}{3}$of the distance of the object from the surface. The wavelength of light inside the surface is$\frac{2}{3}$times the wavelength in air. The radius of the curved surface is$\frac{x}{13} \mathrm{m}$, the value of$x$is ______ .