Basic Science : Electromagnetic Waves QUESTIONS AND ANSWERS :: part1 : 26 to 30
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
26.The velocity of the extraordinary ray and that of the ordinary ray in calcite crystal are |
| same in all directions |
| different in all directions |
| same in only one direction namely along the optic axis |
| zero in one direction and more than zero in perpendicular direction |
27.When light is incident on a plane surface at the polarizing angle, the angle between the reflected beam and the refracted beam |
| 45° |
| 90° |
| 57.5° |
| 32.5° |
28.Light is incident on a surface at a polarizing angle 57°. Then the reflected beam is at |
| 57° |
| 33° |
| 90° |
| 60° |
29.According to Brewster’s law the tangent of polarizing angle is |
| equal to the refractive index of the medium |
| directly proportional to the square root of the refractive index of the medium |
| inversely proportional to the refractive index of the medium |
| directly proportional to the square of the refractive index of the medium |
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