1) what are the pictures above  a) sources light  b) opaque object c) light rays 2) What does transparent mean ? a) It transmits light  b) It absorps all light  c) Some light is absorbed and the rest is reflected  d) Light is scattered as it passes through 3) What does translucent mean ? a) It transmits light b) It absorps all light c) Some light is absorbed and the rest is reflected d) Light is scattered as it passes through 4) What is the name of the dashed line at right angle to the mirror ? a) The reflected ray b) The normal  c) The incident ray d) The refracted ray 5) Explain why you can see an image of yourself in a mirror, but not if you look at a sheet of paper a) Paper has a smoother surface than a mirror b) A mirror reflect light evenly but paper scatters it  c) Paper reflects light evenly but a mirror scatters it d) Paper is opaque and mirror is not 6) .................... to bounce off a surface a) Absorbs b) Transmit c) Reflect d) Scatter 7) Complete the part A missing labels (Letter start from the top) a)  Iris b) Lens c) Optic Nerve 8) The retina contains rod cells and cone cells. There are three types of cone cells. Each type of cone cell detects one of the primary colours of light. What are the three colours that cone cells detect ? a) Yellow, Green, and Blue b) Red, Green, Blue c) Red, Yellow, Blue d) Magenta, Yellow, Cyan 9) What is the function of iris ? a) changes to control size of pupil b) helps to focus light c) converts light to nerve impulses 10) What is the function of pupil a) changes to control size of pupil b) lets light into the eye/controls how much light enters the eyes c) sends nerve impulses to brain

Physics

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?