a concave mirror froms an image on a screen that is twice thesize of the object.

Question

a concave mirror froms an image on a screen that is twice thesize of the object. both the object and screen are then movedto produce an image that is three times the size of theobject. if the screen was moved 75 cm in this process, howfar is the object moved? what is the focal length of themirror? a concave mirror froms an image on a screen that is twice thesize of the object. both the object and screen are then movedto produce an image that is three times the size of theobject. if the screen was moved 75 cm in this process, howfar is the object moved? what is the focal length of themirror?

Explanation / Answer

as u have mentioned that the image formed is two times the sizeit means that the mirror has magnified that image two times

we know

M (linear magnification)= image size (q) /object size(p) = 2

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