Question:
A point object is placed on the principal axis of a convex lens $(f=15 \mathrm{~cm})$ at a distance of $30 \mathrm{~cm}$ from it. A glass Plate $(\mu=1.50)$ of thickness $1 \mathrm{~cm}$ is placed on the other side of the lens perpendicular to the axis, Locate the image of the point object.
Solution:
