| 71. | Best color vision in region of |
| a. | fovea |
| b. | retina |
| c. | blind spot |
| d. | periphery |
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Answer: (a).fovea
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| 72. | Characteristic of a software that enable it to acquire requirement goal, easily is called |
| a. | used |
| b. | reusable |
| c. | useful |
| d. | usable |
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Answer: (d).usable
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| 73. | Positive contrast used on display can lower the |
| a. | saturation |
| b. | contrast |
| c. | hue |
| d. | luminance |
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Answer: (d).luminance
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| 74. | In human vision system, X-cells are placed vigorously in the |
| a. | cornea |
| b. | retina |
| c. | fovea |
| d. | lens |
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Answer: (c).fovea
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| 75. | Color perception by a human eye is acquired due sensitivity of different light's wavelengths of |
| a. | rods |
| b. | cones |
| c. | ganglion cells |
| d. | lens |
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Answer: (b).cones
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| 76. | Term human computer interaction is first known in |
| a. | 1970s |
| b. | 1980s |
| c. | 1960s |
| d. | 1990s |
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Answer: (b).1980s
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| 77. | Perception of brightness by human eye depends upon factor of |
| a. | size of object |
| b. | color of object |
| c. | ratio of light |
| d. | distance of object |
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Answer: (c).ratio of light
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| 78. | Frequency of sound is measured as |
| a. | amplitude |
| b. | timbre |
| c. | pitch |
| d. | loudness |
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Answer: (c).pitch
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| 79. | Characteristic of a software that enable users to intentionally use it is called |
| a. | useful |
| b. | usable |
| c. | used |
| d. | reusable |
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Answer: (c).used
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| 80. | In human vision system, if two items are placed at same distance then smaller angle will be of |
| a. | shorter object |
| b. | less-distant object |
| c. | distant object |
| d. | larger object |
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Answer: (a).shorter object
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