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InterviewSolution
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Identify the prism formula from the following.(a) μ=\(\frac {sin [ \frac {A – \delta_m}{2} ] }{ sin(\frac {A}{2}) } \)(b) μ=\(\frac {sin [ \frac {A + \delta_m}{4} ] }{ sin(\frac {A}{2}) } \)(c) μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ sin(\frac {A}{2}) } \)(d) μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ cos(\frac {A}{2}) } \)I have been asked this question in a job interview.This is a very interesting question from Ray Optics topic in section Ray Optics and Optical Instruments of Physics – Class 12 |
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Answer» RIGHT choice is (c) μ=\(\frac {SIN [ \frac {A + \delta_m}{2} ] }{ sin(\frac {A}{2}) } \) For explanation I would say: The refractive index of the MATERIAL of the prism is given as: μ=\(\frac {sin [ \frac {A + \delta_m}{2} ] }{ sin(\frac {A}{2}) } \) Where A ➔Angle of the prism and δm ➔angle of minimum deviation. This is known as the prism formula. |
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