WHY SIGN CONVENTION IN OPTICS? (for classes XII & X)
Channel: PhysicSimplified
Date: 2020-11-17

in this video the answer for the above  question was discussed " Why sign conventions in optics?"
To have a single formula for lenses and single formula for Mirrors.
Why in numericals we use sign convention even though formula was derived by using sign convention?
It is because to go back the real situation we have to use sign convention.
I have taken new cartesian sign conventions here.
I hope this will be helpful for many Physics students.