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How Does Focal Length of a Convex Lens Change with Increase in Wavelength of Incident Light? - Physics (Theory)

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One Line Answer

How does focal length of a convex lens change with increase in wavelength of incident light?

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Solution

The focal length of a convex lens increases as the wavelength increases. This is so because the refractive index decreases with an increase in wavelength of light.

Concept: Magnification
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