MIRROR FORMULA AND SIGN CONVENTION

SPHERICAL MIRROR & SIGN CONVENTION

SIGN CONVENTION FOR THE APPLICATION OF KIRCHHOFF'S LAW

Lens Formula And Sign Convention

Uses Of Concave Mirrors|Image Formation By A Convex Mirror |Uses Of Convex Mirrors|New Cartesian Sign Convention For Reflection By Spherical Mirrors|Mirror Formula|Magnification (m)|Exercise Questions|OMR

Four Quadrants And Sign Conventions

According to the "New Cartesian Sign Convention" for mirros, when sigh has been given to the focal length of : (i) a concave mirror ? (ii) a convex mirror ?

Average Acceleration, Instantaneous Acceleration|Constant Acceleration Formulae|Sign Convention|OMR

To derive the relevant formula for reflection by spher cal mirrors and refraction by lenses we must adopt sign conventions for measuring distances.Two lenses of powers +7D and -3D are combined. The focal length of the combination would be