Basic Science : Electromagnetic Waves QUESTIONS AND ANSWERS :: part2 : 16 to 20
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
16.H- Polaroid is a thin film of |
| herpatite impregnated with nitrocellulose |
| quinine iodosulphate impregnated with iodine |
| polyvinyl chloride |
| polyvinyl alhohol |
17.Example of uniaxial crystal is |
| mica |
| quartz |
| topaz |
| selenite |
18.Nicol prism is made up of |
| Nicol crystal |
| calcite |
| mica |
| quartz |
19.The phenomenon that takes place in a Nicol prism is |
| dispersion |
| scattering |
| deviation |
| double refraction |
20.Example of biaxial crystal is |
| calcite |
| quartz |
| ice |
| topaz |
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