Question

The focal length of a convex lens is 2cm.Draw the ray diagram of an object placed on principal axis at the 'c' of lens and at a distance of 3cm from its optic centre​

Answer 1

Given:

The focal length of a convex lens is 2cm.

The object placed on principal axis at the 'C' of lens and at a distance of 3cm from its optic centre

Solution:

At Centre of Curvature:

• Image will be real.

• Image will be inverted.

• Image will be same size as that of the object.

• Image will be formed at the centre of curvature itself.

Beyond the Centre of Curvature:

• Image will be formed in between focus and centre of curvature.

• Image will be inverted.

• Image will be real.

• Image will be diminished.

$\star$ Now , refer to the diagrams.