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The dispersive power of the material of ...

The dispersive power of the material of a lens is `0.04` and the focal length of the lens is `10cm`. Find the difference in the focal length (in mm) of the lens for violet and red colour.

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RESONANCE-GEOMATRICAL OPTICS -Exercise-2
  1. An object O is kept in air and a lens of focal length 10 cm (in air) i...

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  2. A stationary observer O looking at a fish F in water (mu(w)=4//3) thro...

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  3. The dispersive power of the material of a lens is 0.04 and the focal l...

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  4. The image (of a real object) formed by a concave mirror is twice the s...

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  5. Which of the following statements are incorrect for spherical mirror.

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  6. A ray of monochromatic light is incident on the plane surface of separ...

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  7. For refractin of light through a prism

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  8. An equilateral prism deviates a ray through 40^@ for two angles of inc...

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  9. Two refracting media are separated by a spherical interfaces as shown ...

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  10. The values of d(1) & d(2) for final rays to be parallel to the princip...

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  11. An object O is kept infront of a converging lens of focal length 30 cm...

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  12. If a symmetrical bi-concave thin lens is cut into two identical halves...

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  13. A narrow beam of white light enters slab having parallel faces.

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  14. By properly combining two prisms made of different materials, it is po...

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  15. A plane mirror M is arranged parallel to a wall W at a distance l from...

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  16. A man washign to get a picture of a Zebra photographed a white donkey ...

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  17. An equiconvex lens of refractive index n(2) is placed such that the re...

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  18. In the figure shown , a point object O is placed in air on the princip...

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  19. An object is kept on the principal axis of a convex mirror of focal le...

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  20. A real object is placed infront of a convex mirror (focal length f). I...

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