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प्रश्न
A ray of light passes through a right-angled prism as shown in the figure. State the angles of incidence at the faces AC and BC.
उत्तर
At AC – Angle is 45°
At BC – Angle is 0°
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संबंधित प्रश्न
State the relation between the critical angle and the absolute refractive index of a medium.
Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.
Swarali has got the following observations while doing an experiment. Answer her questions with the help of observations.
Swarali observed that the light bent away from the normal, while travelling from dense medium to rarer medium. When Swarali increased the values of angle of incidence (i), the values of angle of refraction (r) went on increasing. But at a certain angle of incidence, the light rays returned into the dense medium.
So, Swarali has some questions. Answer them –
a) Name this certain value of ‘i ’. What is the value of ‘r’ at that time ?
b) Name this process of returning of light in dense medium. Explain the process.
Write down the relationship between the critical angle and the refractive index of the medium.
Solve Numerical example.
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