Physics

Problem

A concave mirror forms an inverted image on a screen

70\,\text{cm}

in front of it. The image is three times the size of the object. What is the radius of curvature of the mirror (use sign convention)? a)

+35\,\text{cm}

-35\,\text{cm}

-17.5\,\text{cm}

+17.5\,\text{cm}