A thin ‘plano-convex’ lens consists of one curved surface and one flat surface. When the lens is made up of glass, then what radius of curvature must the curved face have in order to obtain a focal length of +10cm?
i) 5.2cm
ii) 7.5cm
iii) 0.19cm
iv) 15cm
v) 0.067cm
vi) 10.4cm