Basic Science : Electromagnetic Waves QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
6.Which one of the following is an example biaxial crystal |
| Tourmaline |
| Quartz |
| Calcite |
| Mica |
7.Tourmaline crystal is |
| an uniaxial crystal |
| a biaxial crystal |
| an opaque crystal |
| a single refracting crystal |
8.The planes of vibrations of the extraordinary and the ordinary rays are |
| parallel to each other |
| perpendicular to each other |
| making an angle of 57.5° with the axis |
| making an angle of 32.5° with the axis |
9.Nicol prism is used to produce |
| diffraction of light |
| polarized light |
| spectrum |
| refraction of light |
10.Polaroid are used in aero planes to |
| reduce pressure |
| increase incoming radiations |
| reduce incoming radiations |
| increase pressure |
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