ds True or false: the quantities di and do are measured from the focal point of a lens or mirror. By John Published November 7, 2022 Share Answer: False. Because all the distances should be measured from theoptic centre of the lens system TAGGED: True or false: the quantities di and do are measured from the focal point of a lens or mirror. John November 7, 2022 November 7, 2022 Search Search for: