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Get Answers to all your Questions
A student needs spectacles of power – 0·5 D for the correction of his vision.
(i) Name the defect in vision the student is suffering from.
(ii) Find the nature and focal length of the corrective lens.
(iii) List two causes of this defect
Answers (1)
(i) Student is suffering from - Myopia
(ii) Nature of corrective lens - concave / diverging lens
focal length = 200cm
(iii)
(a) enlogation of eye ball
(b) excessive curvature of the eye lens.
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