Question

write three principal of refraction ​

Answer 1

Laws of Refraction

The angle of incidence is the angle between the incident ray and the normal; denoted as ‘i’. The angle of refraction is the angle between the refracted ray and the normal; denoted as ‘r’. Laws of refraction state that:

The incident ray, reflected ray and the normal, to the interface of any two given mediums; all lie in the same plane.The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.




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Answer 2

Explanation:

1) object at infinity

2) object beyond the 2F point of the lens

3) object at the 2F point of the lens

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