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Mechanic Lens/ Prism Grinding Practice Test: Make Lens & Prism
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Mechanic Lens/ Prism Grinding Practice Test: Make Lens & Prism
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25 Questions

1. What do we call the ratio of the speed of light in vacuum to the speed of light in a medium?
2. How many center(s) of curvatures every lens has?
3. The abrasive recommended for grinding materials of low tensile strength is..........  .
4. Which Mirror makes you look larger?
5. The distance between optical center and focal point is termed as ...........
6. Refractive index is defined as n=c/v, where; v is the..........     
7. What is the glass mirror eroding?
8. Which of the following is basically a polishing operation?
9. Image created by convex mirrors are always        .
10. The lens is made up of        .
11. The power of lens is        .
12. Grinding wheel is considered soft or hard depending upon        .
13. Grinding wheel is considered soft or hard depending upon..........  .
14. The power of convex lens        .
15. As per given Indian standards the grain size '54'..........  .
16. The lens which diverges light from a single point is        .
17. Chromatic aberration in a lens is caused by...........
18. A grinding wheel becomes glazed due to      .
19. Grinding material used for grinding of optical lens...........
20. What is the power of lens?
21. Which mirror is used in the ATM for the safety feature?
22. A cut diamond sparkles because of its..........  .
23. What kind of image is formed by a concave lens irrespective of the position of the object?
24. For looking glass, we generally use        .
25. The arbor of the milling machine is used to hold...........

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