A convex lens and convex mirror are separated by distance d as shown in the figure. What should be the value of d so that image is formed on the object itself.

A convex lens and convex mirror are separated by distance d as shown i

1.	A convex lens and convex mirror are separated by distance d as shown in the figure. What should be the value of d so that image is formed on the object itself.
Answer» Solution :For LENS `1/v-1/(-15)=1/10 implies v=+30cm` Case I: IF d=30, the object for MIRROR will be at pole and its image will be FORMED there itself. Case II: IF the rays stike the mirror normally, they will retrace and the image will be formed on the object itself `THEREFORE d=30-20=10cm`