Lesson 3.1.2.2.1

3.1.2.2.1 Monocular depth cues: height in plane, relative size, occlusion, linear perspective Quiz: AQA Psychology, Unit 2

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.1.2.2.1, Monocular depth cues: height in plane, relative size, occlusion, linear perspective: 20 multiple choice questions for the AQA GCSE Psychology (8182), Unit 2: Perception, written with Revision Ninja.

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The 20 questions

  1. Which of these is a monocular depth cue?

    • Retinal disparity, where the two eyes receive slightly different images of the same object
    • Relative size, where objects that are further away appear smaller than objects that are closer
    • Convergence, where the eyes turn inwards to focus on a close object in the visual field
    • Motion parallax, where nearby objects move faster across the visual field than distant ones

  2. What is the monocular depth cue called height in plane?

    • Objects that overlap in the visual field are judged to be at the same depth as each other
    • Objects that are higher in the visual field, below the horizon, are seen as being further away
    • Objects that are lower in the visual field, above the horizon, are seen as being further away
    • Objects that look the same size across the field are judged to be at the same distance

  3. What does the cue of occlusion tell a viewer about depth?

    • An object that is hidden is seen as being larger than the object that is covering it
    • An object that partly hides another object is seen as being closer to the viewer
    • An object that is partly hidden is seen as being the same distance as the object covering it
    • An object that partly hides another object is seen as being further away from the viewer

  4. What does linear perspective show about depth?

    • Parallel lines appear to converge as they come closer, so the converging part looks further away
    • Parallel lines appear to spread out as they recede, so the spread part of the scene looks further away
    • Parallel lines always stay the same width, so the scene looks flat and at the same depth
    • Parallel lines appear to converge as they recede, so the converging part of the scene looks further away

  5. A photograph shows two trees, one overlapping the other, with the nearer one hiding part of the further. Which cue is shown?

    • Occlusion, because the tree that hides part of the other is seen as nearer
    • Linear perspective, because the lines of the trunks converge towards the horizon in the picture
    • Retinal disparity, because the two trees are seen by each eye as slightly different images
    • Height in plane, because the lower tree on the page is seen as being further from the viewer

  6. A road seems to get narrower in the distance, with its edges meeting at the horizon. Which cue is this?

    • Relative size, because the far cars appear smaller than the near cars on the road
    • Linear perspective, because parallel lines appear to converge with distance
    • Convergence, because the eyes turn inwards to focus on the far edges of the road
    • Occlusion, because the far end of the road is hidden by the cars nearer to the viewer

  7. Two people of the same height are standing in a field, one far away and one near. The distant one looks smaller. Which cue is this?

    • Occlusion, because the nearer person is hiding part of the distant person in the scene
    • Linear perspective, because the lines of the field converge towards the horizon at the edges
    • Relative size, because the image of the more distant person is smaller on the retina
    • Height in plane, because the more distant person is higher in the visual field of the viewer

  8. Why are monocular depth cues useful to a person with one working eye?

    • They can be used with the image from a single eye, so depth can still be perceived
    • They depend on the eyes turning inwards, so they only work when both eyes are focused
    • They use the difference between the two images, so they fail completely with one working eye
    • They need both eyes to work together, so depth can still be perceived with one working eye

  9. Which pair shows two monocular depth cues?

    • Linear perspective and retinal disparity
    • Relative size and convergence
    • Occlusion and relative size
    • Occlusion and retinal disparity

  10. In a painting, a row of fence posts gets smaller towards the back. Which cue does the painter use?

    • Motion parallax and occlusion, showing the posts are moving across the scene as the viewer walks
    • Height in plane and retinal disparity, showing the posts are higher than the viewer's eye line
    • Retinal disparity and convergence, showing the posts are closer to the viewer's eyes
    • Linear perspective and relative size, both showing the posts recede into the distance

  11. Which monocular cue is most useful when an object is partly hidden behind another?

    • Occlusion, because the object doing the hiding is judged to be nearer than the one that is hidden
    • Relative size, because the hidden object is always smaller in the field of vision than the other
    • Linear perspective, because the hidden object lies on lines that converge towards the horizon
    • Height in plane, because the hidden object is always higher in the field of vision than the other

  12. Why does a higher object in the picture, below the horizon, look further away?

    • Because height in the plane is a binocular cue, with higher objects judged to be nearer to the viewer
    • Because high objects produce a larger retinal disparity, so they look nearer than low objects do
    • Because height in the plane is a monocular cue, with objects higher in the field judged to be further
    • Because the eyes converge more on high objects, so they are judged to be nearer than low ones

  13. Which statement about monocular depth cues is correct?

    • They are cues that depend on the two eyes working together, such as occlusion and linear perspective
    • They are cues that depend on eye muscles turning inwards, such as relative size and occlusion
    • They are cues that only work for objects closer than two metres, such as relative size and perspective
    • They are cues that depth can be judged from using only one eye, such as occlusion and linear perspective

  14. A photo shows a car in front of a building, with part of the building hidden. Which cue tells the viewer the car is nearer?

    • Convergence, because the eyes turn inwards to look at the car as it sits in front of the building
    • Occlusion, because the car hides part of the building so it is judged to be closer
    • Retinal disparity, because the car looks different from the building in each of the two eyes
    • Linear perspective, because the car's sides converge towards the horizon line in the photo

  15. A viewer compares two identical bottles, with one placed higher in the image than the other, both below the horizon. Which cue is used?

    • Height in plane, because the bottle higher in the image appears to be closer to the viewer
    • Relative size, because the higher bottle is larger on the retina than the lower bottle is
    • Height in plane, because the bottle higher in the image appears to be further away
    • Occlusion, because the higher bottle hides the lower bottle from the viewer in the image

  16. Which monocular cue is least affected by how far apart a person's eyes are?

    • Relative size, because it depends on the image in one eye rather than on a difference between two images
    • Retinal disparity, because it depends on the gap between the two eyes and the images they form
    • Binocular fusion, because it depends on the two separate images being merged together in the brain
    • Convergence, because it depends on how far the eyes turn inwards to fixate the object in view

  17. A student judges which of two identical cups is further away on a table, using only one eye. Which cues can they use?

    • Convergence and retinal disparity, both of which need one eye to be turned inwards
    • Occlusion and retinal disparity, both of which need a second eye to see the cups
    • Relative size and height in plane, both of which work with one eye
    • Retinal disparity and convergence, both of which need the two eyes to work together

  18. A flat photo of a long corridor shows the walls meeting at a far point. Which cue gives the impression of depth?

    • Convergence, because the viewer's eyes turn inwards to focus on the far end of the corridor
    • Retinal disparity, because each eye sees the walls from a slightly different angle in the photo
    • Motion parallax, because the walls appear to move faster when they are closer to the viewer
    • Linear perspective, because the walls appear to meet as the corridor recedes from the viewer

  19. Which statement about monocular depth cues in a scene viewed through a single eye is correct?

    • Depth cannot be judged at all, because a single image has no information about distance within it
    • Depth can be judged only from convergence, which is the only cue that works with a single eye
    • Depth can be judged from occlusion and relative size, even though only one image reaches the brain
    • Depth can be judged only from retinal disparity, which needs one image to be compared with itself

  20. Which of these correctly describes relative size as a depth cue?

    • Objects of the same real size look smaller the further away they are, so the smaller one is judged further
    • Objects of the same real size look smaller only when viewed by both eyes, so size is a binocular cue
    • Objects of different real sizes look the same size from any distance, so size gives no depth cue at all
    • Objects of the same real size look larger the further away they are, so the larger one is judged further

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