An object is placed at a distance of 12 cm from a convex lens. A convex mirror of focal length 15 cm is placed on other side of lens at 8 cm as shown…

An object is placed at a distance of $\displaystyle 12$ cm from a convex lens. A convex mirror of focal length $\displaystyle 15$ cm is placed on other side of lens at $\displaystyle 8$ cm as shown in the figure. Image of object coincides with the object. When the convex mirror is removed, a real and inverted image is formed at a position. The distance of the image from the object will be \_\_\_\_ (cm).