Hi experts Pls emergency Pls I beg you Pls tell the answer Pls pls pls Request Share with your friends Share 0 Vipra Mishra answered this Solution Formula for refraction through the lens is, u=−30 cm and f=±20cm 1f =1v -1u1v =1f +1u =120-130 =10600v = 60 cmAs v is positive,the image I1 ,is formed to the right of lens. The convex mirror is to be placed to the right of lens in such a way hat light rays fall on the mirror normally. Then only the light rays will retrace their path and form final image on the object itself. This shows that image I1 formed by the lens should be at the center of curvature of the mirror i.e,PI1 = R = 2f =2×15 = 30 cmAs v =OI1 = 60 cmHenceOP = 60 -30 = 30 cmThus,the convex mirror should be placed at a distance of 30 cm to the right of lens 0 View Full Answer