Question

18. Write & draw the rules of refraction.
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Answer 1

Explanation:

Refraction is a phenomenon of bending of light due to change in optical density.

Laws of refraction:

Incident ray, refracted may and the normal to the surface at the point of incidence,all lie in same plane.

Answer 2

Answer:

Recreation is a phenomenon of bending of light due to change in optical density.

Laws of refrection:

1. incident ray, refracted may and the normal to the surface at the point of insidence, all lie in same plane.
2. Snell's law and diagram is in the attachment pics above.