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Achromatic combination can not be achiev...

Achromatic combination can not be achieved by using

A

two thin convex lenses with proper separation.

B

two thin concave lenses with proper separation.

C

a convex and a concave lens in contact.

D

all of the above.

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TARGET PUBLICATION-OPTICS-EXERCISE
  1. Rays of different colours fail to converge to a point after passing th...

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  2. What causes chromatic aberration?

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  3. Achromatic combination can not be achieved by using

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  4. An achromatic combination of lenss produce.

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  5. In presence of aberration, circular image is formed of a point.

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  6. Spherical aberration of a convex and a concave lens respectively is

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  7. An optical instrument , in general, extends our range of vision by

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  8. The least distance of distinc vision for a young adult with normal vis...

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  9. A norml eye is unable to see objects at a distance less than distance ...

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  10. The clearity of image formed on retina of eye depends on the

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  11. A convex lens of the short focal length held very close to the eye, to...

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  12. The magnifying power of simple microscope is

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  13. A perosn using a lens as a simple microscope sees an

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  14. The magnifying power of simple microscope, when image is formed at DDV...

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  15. Magnification of simple microscope when image is at infinity is given ...

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  16. The magnifying power of simple microscope is maximum when image is for...

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  17. When a convex lens of 2.5 cm focal length is used as a magnifying glas...

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  18. The compound microscope is used to see

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  19. Compound microscope is NOT used in

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  20. The focal length of the eye-piece of compound microscope is

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