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प्रश्न
What is meant by optical illusion? Give one example.
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उत्तर
An optical illusion is the life-like continuous movement on the screen. Television is an example of optical illusion, where the scanning beam of a picture frame of the TV camera moves so rapidly on the viewing screen of the TV set that our eyes cannot keep pace with it.
संबंधित प्रश्न
Name any two defects of vision which can be corrected by using spectacles.
Differentiate between members of the following pair with reference to what is asked in the bracket.
Rods and cones (sensitivity).
Select the odd one in the following series:
Endolymph, Tympanic membrane, Semi-circular canal, Blind spot.
Differentiate between:
Short-sightedness and Long-sightedness.
With respect to human eye explain:
(i) How is the image formed on the retina?
(ii) How is the amount of light entering the eye-controlled?
(iii) What type of lens is used for the correction of ‘Long sight’ defect?
(iv) With the help of a ray, diagram show the defect of the eye and then its correction after the use of a lens.
What are the causes of ‘Myopia’?
Differentiate the eye defects: Myopia and Hypermetropia
Which of the following statement is correct?
Name the following:
Two kinds of accomodations.
