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Question
On what factors does the focal length of a lens depend?
[2 MARKS]
[2 MARKS]
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Solution
Factors: 2 Marks
The focal length of a lens depends on the:
(a) radii of curvature of lens surfaces.
(b) the refractive index of the material of the lens.
(c) the colour of the light.
The focal length of a lens depends on the:
(a) radii of curvature of lens surfaces.
(b) the refractive index of the material of the lens.
(c) the colour of the light.
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