the focal length of the lens depends upon ?
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Explanation:
The focal length of the lens depends upon the ciliary muscles.
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Answer:
The focal length of a lens depends on the (i) radii of curvatureof its surfaces and (ii) on the index of refraction of the material the lens is made from.
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The focal length of a lens depends on the (i) radii of curvatureof its surfaces and (ii) on the index of refraction of the material the lens is made from.
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