| 81. | Ratio of rods per eye in human vision system is |
| a. | 6 million |
| b. | 120 million |
| c. | 10 million |
| d. | 110 million |
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Answer: (a).6 million
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| 82. | Subsystem of human machine processor that handles sensory stimulus is called |
| a. | motor system |
| b. | cognitive system |
| c. | perceptual system |
| d. | autonomic system |
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Answer: (c).perceptual system
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| 83. | Inner ear cochlea is filled with |
| a. | air |
| b. | wax |
| c. | grains |
| d. | liquid |
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Answer: (d).liquid
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| 84. | Specialized nerve cells placed in retina in human eyes are called |
| a. | blind spot |
| b. | ganglion cells |
| c. | cornea |
| d. | lens |
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Answer: (b).ganglion cells
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| 85. | Protection of sensitive middle ear from damage is responsibility of |
| a. | inner ear |
| b. | medium ear |
| c. | outer ear |
| d. | middle ear |
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Answer: (c).outer ear
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| 86. | Rods are placed in human eyes at position of |
| a. | edges of cornea |
| b. | center of cornea |
| c. | edges of retina |
| d. | center of retina |
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Answer: (c).edges of retina
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| 87. | Two types of photoreceptors of retina in human eyes are |
| a. | lens and cornea |
| b. | lens and rods |
| c. | lens and cones |
| d. | rods and cones |
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Answer: (d).rods and cones
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| 88. | Standard line length given by scientists for equally legible is |
| a. | 2.1 to 5.3 inches |
| b. | 2.3 to 5.2 inches |
| c. | 2.2 to 5.3 inches |
| d. | 2.5 to 3.2 inches |
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Answer: (b).2.3 to 5.2 inches
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| 89. | One of factors, that effect speed of screen reading to be reduced is |
| a. | longer line lengths |
| b. | more words per page |
| c. | negative contrast |
| d. | colorful display |
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Answer: (a).longer line lengths
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| 90. | Characteristic of a software that enable it to acquire requirement goal is called |
| a. | usable |
| b. | useful |
| c. | used |
| d. | reusable |
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Answer: (b).useful
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