| 1. | Perception of size by human eye depends upon |
| a. | visual angle |
| b. | visual acuity |
| c. | visual field |
| d. | other factors |
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Answer: (d).other factors
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| 2. | Photoreceptors of eyes that allows color vision are called |
| a. | rods |
| b. | lens |
| c. | corneas |
| d. | cones |
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Answer: (d).cones
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| 3. | Function between luminance of an object and its background is called |
| a. | contrast |
| b. | flicker |
| c. | saturation |
| d. | intensity |
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Answer: (a).contrast
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| 4. | Generally, computer input in human computer interaction is |
| a. | computer output |
| b. | computer input |
| c. | user input |
| d. | user output |
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Answer: (d).user output
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| 5. | Visible section of an ear is called |
| a. | inner ear |
| b. | middle ear |
| c. | medium ear |
| d. | outer ear |
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Answer: (d).outer ear
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| 6. | Photoreceptors of eyes that are been saturated and active by sudden light are called |
| a. | cones |
| b. | lens |
| c. | corneas |
| d. | rods |
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Answer: (d).rods
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| 7. | Reading speed and accuracy is increased by reading familiar words based on |
| a. | word shape |
| b. | word color |
| c. | word as single letter |
| d. | word as character by character |
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Answer: (a).word shape
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| 8. | Small region of retina where optic nerve enters eye is called |
| a. | fovea |
| b. | blind spot |
| c. | ligament |
| d. | lens |
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Answer: (b).blind spot
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| 9. | Three colors of cone sensitivity for three different types of cones are |
| a. | blue, green and red |
| b. | orange, green and red |
| c. | blue, green and purple |
| d. | blue, green and white |
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Answer: (a).blue, green and red
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| 10. | Term "physical reception" of stimulus actually describes the |
| a. | infinite capabilities of human |
| b. | skills of human vision |
| c. | unlimited human vision |
| d. | limitation of human vision |
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Answer: (d).limitation of human vision
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