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What is the focal length of bi-convex le...

What is the focal length of bi-convex lens to use to correct a hypermetropia in terms of near point 'd'?

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`f=(25d)/((d-25)) ` (f in cm)
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VGS PUBLICATION-BRILLIANT-HUMAN EYE AND COLOURFUL WORLD-CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION-I) (1/2 MARKS QUESTIONS)
  1. What is represented by 'H', given in the above figure ?

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  2. Which lens is used to rectify the vision defect, hypermetropia ?

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  3. What is the focal length of bi-convex lens to use to correct a hyperme...

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  4. What is the vision defect, when the ability of accommodation of the ey...

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  5. Presbyobia means

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  6. A person is suffering from presbyopia which type of lens is prefarable...

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  7. Ramesh used spectacles for presbyopia. His spectacles consists of

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  8. In which terms, the degree of convergence or divergence of light ray t...

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  9. If the focal length of a lens fis in cm, then write the formula of pow...

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  10. What is units of power of lens ?

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  11. Doctors advised to use 2D lens. What is its focal length ?

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  12. A lens has focal length of 50 cm. What is its power ?

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  13. How many triangular bases is there for a glass prism ?

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  14. What is called the angle between the emergent ray and normal of a pris...

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  15. What is called the angle between the incident ray and emergent ray of ...

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  16. Which of the angle of deviation ?

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  17. Which is the angle of the prism ?

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  18. What are anglei(1) and anglei(2) ?

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  19. At angle of minimum deviation, what is the relation between angle of i...

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  20. What is the relation between angle of prism (A), angle of deviation (d...

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