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A person can see objects clearly, when t...

A person can see objects clearly, when they are farther than `12.5` m away What type of lens and what type of power will allow the person to see distant objects clearly ?

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Optical Instruments-EXERCISE
  1. A certain myopic person has a far point of 150 cm. If he is able to re...

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  2. A person can see objects clearly, when they are farther than12.5m away...

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  3. A person can see objects clearly, when they are farther than 12.5 m aw...

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  4. Jaura’s far point of a myopic eye is 10 cm from the eye. Findthe natur...

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  5. The near point of a person suffering from hypermetropia is 75 cm. calc...

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  6. If aperson uses spectacles of Power +1.0 dioptre, what is the nearest ...

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  7. If far point of myopic person is 50 cm in front of the eye, what is th...

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  8. What is hypermetropia ?

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  9. What is meant by presbyopia ?

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  10. What is myopia ?

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  11. Define resolving power of compound microscope.

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  12. What is simple microscope? Find an expression for its magnification.

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  13. Define resolving power of telescope.

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  14. What is myopia? What are its causes? Name the type of the lens to corr...

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  15. Define resolving power for a compound microscope. On what factors does...

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  16. What is Hypermetropia (Far sightedness) ? What are its causes ? How ca...

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  17. What is Myopia (nearsightedness) ? What are its causes ? Explain with ...

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  18. Give three points of difference between refracting type astronomical t...

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  19. A person can see clearly only up to 3 m.What type of defect a person h...

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  20. What is Hypermetropia (Far sightedness) ? What are its causes ? How ca...

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