Revision: Lenses Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 04 Lenses - Revision Quiz Test your understanding of Lenses here: 1 / 5 1) When an object is placed 31 cm from a lens the image formed is real, inverted and diminished. When the object is placed 29 cm from the lens the image formed is real, inverted and enlarged. Which of the following is a possible focal length of the lens? 60 cm 30 cm 15 cm cannot be determined 2 / 5 2) The diagram below shows object O, the image I formed from the light passing through lens L. Which distance is the object distance? C D B A 3 / 5 3) Three parallel rays of light X, Y and Z pass through a thin converging lens L. F is the principal focus of the lens. Which of the ray(s) after passing through the lens is/are not correctly drawn? X only Y and Z only X and Y only X and Z only 4 / 5 4) The diagram shows a lens forming a blurred image of an object on a screen. How can a sharp image be obtained on the screen? By moving the object towards the lens and screen. By using a lens of shorter focal length. By using a lens of longer focal length. By moving the screen towards the lens and object. 5 / 5 5) A lens is used to form an image of an object as shown below. What is the likely application this lens is being used for? telescope human eye classroom projector magnifying glass Your score is Restart quiz
