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(8)State the four fundamental laws in geometrical optics. |
Answer» <html><body><p><strong>Answer:</strong></p><p>Law of rectilinear propagation: According to the law of rectilinear propagation, the light will travel in a <a href="https://interviewquestions.tuteehub.com/tag/straight-633156" style="font-weight:bold;" target="_blank" title="Click to know more about STRAIGHT">STRAIGHT</a> <a href="https://interviewquestions.tuteehub.com/tag/line-1074199" style="font-weight:bold;" target="_blank" title="Click to know more about LINE">LINE</a> in the region of constant refractive index.</p><p>Law of <a href="https://interviewquestions.tuteehub.com/tag/reflection-13747" style="font-weight:bold;" target="_blank" title="Click to know more about REFLECTION">REFLECTION</a>: The law of reflection <a href="https://interviewquestions.tuteehub.com/tag/states-1225920" style="font-weight:bold;" target="_blank" title="Click to know more about STATES">STATES</a> that when a ray of light gets reflected, the angle of reflection will be equal to the angle of incidence. The incident ray reflected ray and the normal are on the same plane.</p><p>Law of refraction: The law of refraction is <a href="https://interviewquestions.tuteehub.com/tag/also-373387" style="font-weight:bold;" target="_blank" title="Click to know more about ALSO">ALSO</a> known as Snell’s law. When a ray of light is refracted at the interface, the incident ray, refracted ray and the normal will are on the same plane. The sine of the angle of refraction is proportional to the angle of incidence.</p></body></html> | |