Question

$\sf\bold{Hello!!!}$

Question___??

1.$<b>State three laws of reflection!!!$

2.$Mention some defects of eye& some methods to resolve it!!$..!!!

Thanks!!!!​

Answer 1

HEYAA BUDDY❤

✔ 1. Laws of reflection also called snell’s law because that given by snell. Here are the laws of reflection⤵

⭐The angle of incidence is equal to the angle of reflection.Nature of light is not changes in reflection.

⭐The incidence ray ,reflection ray and normal is on same plane.

⭐The ratio of angle of inciedance and angle of reflection is equal to constant.

✔ 2. Defects:

✔MYOPIA: It is near-sightedness problem. The person can see near objects clearly but cannot see the far objects properly.

⭐Methods for resolving: Lenses used to correct nearsightedness are concave in shape. In other words, they are thinnest at the center and thicker at the edge.

These lenses are called "minus power lenses" (or "minus lenses") because they reduce the focusing power of the eye. By doing so, minus lenses move the focus of light in a nearsighted eye from a point in front of the retina backward so it falls directly onto the surface of the retina. This shift corrects the blurry distance vision caused by myopia, restoring clear vision.

✔HYPERMETROPIA: It is long-shightedness problem. The person can see far objects clearly but cannot see near objects clearly.

⭐CORRECTION: It can be corrected usung convex lens.

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Answer 2

1) Laws of Reflection are as follows :

First law : The incident ray, reflected ray and the normal lie in the same plane.

Second law : Angle of incidence is equal to angle of reflection.

Third law : The ratio of angle of incidence and angle of reflection is constant.

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2) Mention some defects of eye& some methods to resolve it.

Answer :

Myopia ( Nearsightedness ) :

Myopia is the defect of vision in which a human eye can see nearby objects distinctly but is unable to see distant objects clearly. In this cases, the image of a distant object is formed in front of the retina. This defect can be corrected using a concave lens of suitable focal length.

Hypermetropia ( Farsightedness ) :

Hypermetropia is the defect of vision in which a human eye can see distant objects distinctly but cannot see nearby objects clearly. In this case, the image of the nearby object would fall behind the retina. This defect can be corrected by using a convex lens of suitable focal length.

Presbyopia : Presbyopia is the defect of vision in which aged people find it difficult to see nearby objects comfortably and clearly. This defect can be corrected using a convex lens of suitable focal length.

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