A doctor has prescribed a corrective lens of power +1.5D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
Power of lens p=+1.5Dp=1f
1.5=1f
f=11.5m
f=1015m
f=23m=0.67m
Focal length of the lens is +0.67m.
The prescribed lens is converging in nature.