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The far point of a myopic person is 80 c...

The far point of a myopic person is 80 cm. In front of the eye. What is the power of the lens required to enable him to see very distant objects clearly ?
In what way does the corrective lens help the person above?Does the lens magnify very distant objects?Explain.

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MODERN PUBLICATION-Optical Instruments-EXERCISE
  1. The far point of a myopic person in 80 cm in front of the eye. What is...

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  2. A person with myopic eye cannot see objects beyond 1.2 m distinctly. W...

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  3. The far point of a myopic person is 80 cm. In front of the eye. What i...

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  4. The near point of a hypermetropia eye is 1 m find the power of the len...

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  5. A certain person can see clearly objects at a distnaces btween 20 cm a...

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  6. A certain nearsighted person cannot see objects clearly,when they are ...

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  7. A diamond cutter uses a jeweller's lens to eamine a diamond.If the foc...

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  8. Sherllock Homes looks at a fingerprint with a magnifying glass of powe...

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  9. A converging lens of power 25 D is used as a simple microscoe.Calculae...

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  10. A man with normal near point (25 cm) reads a book with small print usi...

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  11. A man with normal near point (25 cm) reads a book with small print usi...

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  12. In a compound microscope,an object is placed at a distance of 1.5 cm f...

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  13. The focal lengths of the objective and eye-piece of a compound microsc...

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  14. A compound microscope consists of an objective lens of focal length 2....

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  15. The total magnification produced by a compound microscope is 20,while ...

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  16. An astronoical telescope consists of two thin lenses set 36 cm apart a...

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  17. The magnifying power an astronomical telescope in the normal adjustmen...

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  18. An astronomical telescope,when in normal adjustment has magnifying pow...

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  19. A small telescope has an objective lens of focal length 140cm and an e...

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  20. An astronomical telescope,when in normal adjustment has magnifying pow...

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