An optical systen comprises in turn ,from left to right: an observer ,a lens of focal length`+30cm`
Channel: Doubtnut
Date: 30/08/2020

An optical systen comprises in turn ,from left to right: an observer ,a lens of focal length`+30cm`an object`20mm`high, and a  convex mirror fo radius`80cm` .the object is between the lens and the mirror ,`20cm` from the lens and`50cm`from the mirror.The observe views the image formed first by reflection and then by refraction    In figure ,the character of the intermediate image formed by the mirror,with respect to the erect object ,is