Question

What is Rules for Image Formation by Refraction Through Lens?

Answer

Rules for Image Formation by Refraction Through Lens - (i) The rays coming parallel to principal axis of lens passes (or appear to pass) through the focus after the refraction, (ii) The rays coming from the focus (or appear to coming from the focus) of lens go parallel to the principal axis of lens after refraction, (iii) The rays of light passing through optical centre go straight after refraction without changing their path.