Physics-10th The Human Eye and the Colourful World CBSE Board 2024 Medium
In bifocal lenses used for the correction of presbyopia :
In bifocal lenses used for the correction of presbyopia :
- (a)the upper portion is of convex lens for the near vision and lower part is of concave lens for the distant vision.
- (b)the upper portion is of convex lens for the distant vision and lower part is of concave lens for the near vision.
- (c)the upper portion is of concave lens is for the near vision and lower part is of convex lens for the distant vision.
- (d)the upper portion is of concave lens for the distant vision and lower part is of convex lens for the near vision.
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