An object is placed at a distance of 
from a convex lens. A convex mirror of focal length 
is placed on other side of lens at 
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)
Text Solution
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For the object to coincide with image, the light must fall perpendicularly to mirror. Which means that the light will have to converge at 
of mirror. Without the mirror also, the light would coverage at C.
So the distance is : 
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