Explain briefly how the focal length of would remain same. a convex lens changes with increase in wavelength of incident light.

Explain briefly how the focal length of would remain same. a convex le

1.	Explain briefly how the focal length of would remain same. a convex lens changes with increase in wavelength of incident light.
Answer» SOLUTION :The REFRACTIVE INDEX of the material of a lens DECREASES with increase in wavelength of incident LIGHT. Since focal length of a lens is given by. ` 1/f = (mu - 1) ((1)/(R_1)- (1)/(R_2) )` it follows that focal length of the lens will increases with increase in wavelength of incident light.

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Explain briefly how the focal length of would remain same. a convex lens changes with increase in wavelength of incident light.

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