Q58.The polymer used for optical lenses is : (1) polypropylene (2) polyvinyl chloride (3) polythene (4) polymethyl methacrylate
What This Question Tests
This question tests the recall of specific applications of common polymers, identifying which one is suitable for optical lenses.
Concepts Tested
📚 NCERT Sections This Tests
2.10 — Dielectrics And Polarisation
Physics Class 11 · Chapter 2
2.10 DIELECTRICS AND POLARISATION Dielectrics are non-conducting substances. In contrast to conductors, they have no (or negligible number of ) charge carriers. Recall from Section
9.7 — Double-Convex Lenses Are To Be Manufactured From A Glass Of
Physics Class 12 · Chapter 9
9.7 Double-convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20cm?
9.6 — A Prism Is Made Of Glass Of Unknown Refractive Index. A Parallel
Physics Class 12 · Chapter 9
9.6 A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40°. What is the refractive index of the material of the prism? The refracting angle of the prism is 60°. If the prism is placed in water (refractive index 1.33), predict the new angle of minimum deviation of a parallel beam of light.
📋 Question Details
- Chapter
- Polymers
- Topic
- Uses of polymers
- Year
- 2013
- Shift
- 22 Apr Online
- Q Number
- Q58
- Type
- Conceptual
- NCERT Ref
- Class 12 Chemistry Ch 15: Polymers
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