Question

discuss the new cartesian siqn conventions for spherical mirrors

Answer 1

This sign convention is known as New Cartesian Sign Convention. Sign is taken as – (negative) from pole of aspherical mirror towards object along the principal axis. This means sign is always taken as – (negative) in front of a spherical mirror

Answer 2

hey...

The sign conventions of spherical mirrors

1. All the distances should be measured from pole
2. Distances along the incident ray should be taken positive and against it should be taken negative