While determining focal length of given concave mirror by focusing a d – InterviewSolution

1.	While determining focal length of given concave mirror by focusing a distant object on the screen you always get in the begi nnind a blurred image on the screen . In order to obtain a sharp image on the screen in which direction we have to move the mirror?
Answer» While determining focal length of given concave mirror by focusing a distant object on the screen you always get in the begi nnind a blurred image on the screen . In order to obtain a sharp image on the screen in which direction we have to move the mirror?

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