Physics - Geometrical Optics Question with Solution | TestHub

For an object placed at a distance$2.4 \mathrm{m}$from a lens, a sharp focused image is observed on a screen placed at a distance$12 \mathrm{cm}$from the lens. A glass plate of refractive index$1.5$and thickness$1 \mathrm{cm}$is introduced between lens and screen such that the glass plate plane faces parallel to the screen. By what distance should the object be shifted so that a sharp focused image is observed again on the screen?