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The chromatic aberration in lenses is du...

The chromatic aberration in lenses is due to

A

Disimilarity of main axis of rays

B

Disimilarity of radii of curvature

C

Variation of focal length of lenses with wavelength

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`f prop (1)/(n - 1) and lambda prop (1)/(n)`.
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ERRORLESS-RAY OPTICS-NCERT BASED QUESTIONS ( Refraction at Curved surface )
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  2. A plano-convex lens is made of refractive index 1.6. The radius of cur...

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  3. The chromatic aberration in lenses is due to

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  4. The focal length for violet, green and red light rays are fV,fG and fR...

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  5. The radius of curvature of the curved surface of a plano-convex lens i...

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  6. The radius of curvature of the curved surface of a plano-convex lens i...

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  7. A convex glass lens (mu(g) = 1.5) has a focal length of 8 cm when plac...

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  8. In figure, an air lens of radius of curvature of each surface equal to...

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  9. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

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  10. Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal l...

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  11. A biconvex lens has a radius of curvature of magnitude 20cm. Which one...

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  12. Let f(v) and f(r) are the focal lengths of a convex lens for violet an...

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  13. A thin equi-convex lens is made of glass of refractive index 1.5 and i...

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  14. A thin glass (refractive index 1.5) lens has optical power of -5D in a...

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  15. A plano – convex lens made of material of refractive index mu with rad...

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  16. A narrow parallel beam of light falls on a glass sphere of radius R an...

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  17. The flat face of a plano-convex lens of focal length 10 cm is silvered...

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  18. The focal length of a plano-convex lens is f and its refractive index ...

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  19. A parallel beam of light is incident on a converging lens parallel to ...

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  20. A convex lens of focal length f produces an image (1)/(n) times than ...

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