Learn about and revise lenses and their power, real and virtual images, and ray diagrams with GCSE Bitesize Physics.

Learn about and revise lenses, magnifying lenses, images and ray diagrams with this GCSE Bitesize Physics revision guide for OCR Gateway.

Question1: A ray of light travelling in air enters obliquely into water. ... Therefore, the object is placed 30 cm in front of the concave lens. Ray diagram: ...