How can you increase the focal length of the convex lens
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The refractive index of material of a lens decreases with increase in wavelength of incident light. Focal length of lens increases with decrease in refractive index of medium
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Answer:
Very Good question. thanks for asking !!!
The refractive index of material of a lens decreases with increase in wavelength of incident light.
Focal length of lens increases with decrease in refractive index of medium.
Formula :
Lens makers formula 1/f =(n-1) (1/R1-1/R2)
Conclusion : focal length of a convex lens increases ,with increase in wavelength on incident light
HOPE IT HELPS YOU......................
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