Q. Low or average luminance, light perceived by a human eye is to flicker if its switching speed is less than

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Q. Factors that effect speed of screen reading can be reduced using

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Q. Error message at bottom of screen in a system design must be

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Q. Users have major senses used to percept is in total

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Q. Small region of retina that is used for fixation of image is called

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Q. In human vision system, if two items are placed at same sizes then smaller angle will be of

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Q. Social factor influence regular performance of

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Q. Generally, user input in human computer interaction is

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Q. First stage of reading process of data from screen is

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Q. Human speed of reading text is higher at

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Q. In human vision, light into a sharp image is been focused by

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Q. In human computer interaction, primary role for receiving is played by

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Q. In human vision system, fine details of an image can be perceived by ability called

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Q. Relationship among visual acuity and luminous is

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Q. Longest wavelength is of color

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Q. In human vision system, size of image is defined as

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Q. Entity that assists computer system is called

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Q. To establish middle ear constant temperature is responsibility of

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Q. Third stage of reading process of data from screen is

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Q. Percentage of color blind men in world is

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