Physics
In the figure below, a ray of light A incident from air suffers partial reflection and refraction at the boundary of water.
![In the figure below, a ray of light A incident from air suffers partial reflection and refraction at the boundary of water. Complete diagram showing reflected ray B and refracted ray C. How are the angles of incidence i and refraction r related? Refraction of light at plane surfaces, Concise Physics Class 10 Solutions.](https://cdn1.knowledgeboat.com/img/cp10/light-ray-air-to-water-concise-physics-icse-class-10-solutions-612x335.jpg)
(a) Complete the diagram showing (i) the reflected ray B and (ii) the refracted ray C.
(b) How are the angles of incidence i and refraction r related?
Refraction Plane Surfaces
ICSE
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Answer
(a) Below is the completed diagram with the refracted ray B and the reflected ray C labelled:
![Completed diagram of a ray of light A incident from air suffering partial reflection and refraction at the boundary of water with reflected ray B and refracted ray C labelled. Refraction of light at plane surfaces, Concise Physics Class 10 Solutions.](https://cdn1.knowledgeboat.com/img/cp10/refraction-air-to-water-ray-diagram-concise-physics-icse-class-10-solutions-818x749.jpg)
(b) The relation between angle of incidence i and the angle of refraction r is given by Snell’s law as,
The ratio of the sine of the angle of incidence i to the sine of the angle of refraction r is constant for the pair of given media.
The constant 1μ2 is called the refractive index of the second medium with respect to the first medium
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