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Mechanic Lens/ Prism Grinding Practice Test: Make Spectacles Lenses And Carry Out Inspection & Quality Control
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Mechanic Lens/ Prism Grinding Practice Test: Make Spectacles Lenses And Carry Out Inspection & Quality Control
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19 Questions

1. Which Lens included in human eye?
2. The condition in which lines in one direction appear to be well focused while those in perpendicular direction appear distorted is known as....................
3. The lens which diverges light from a single point is..........  .
4. The long sightedness can be corrected by using...........
5. Which glass is used for making lens and prism?
6. When will the convex lens give a real image?
7. The Diamond curve generation is used in which production process ?
8. A lens which converges a beam of parallel rays to a point is called...........
9. What are lead glasses used for?
10. The Si unit for power of lens is...........
11. Condition in which is formed in front of the retina is called?
12. Which is not the operations involved in lens making?
13. The part of the lens through which the ray of light passes without suffering deviation is called...........
14. Astigmatism of a human eye can be removed by using..........  .
15. Which not the defect of eyes?
16. Astigmatism is a defects of ...........
17. What is the another name of farsightedness?
18. What is the another name of Nearsightedness?
19. The imaginary line passing through the centre of a lens        .

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