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1.....The incident ray, the normal at the point of incidence and the refracted ray all lie on the same plane.
2.....The ratio of sine of angle of incidence to the sine of angle of refraction is always a constant

Q2.....It is the ray after bending at the surface of refraction.

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The refracted ray, the normal,The point of incidence and the incident ray all lie on the same plane
The ration of sin of angle of incidence and sin of angle of refraction is always constant.

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Ans.1)

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1)THE NORMAL AT THE POINT OF INCIDENCE,THE REFRACTED RAY AND THE INCIDENT RAY,ALL LIE ON THE SAME PLANE
2)THE RATIO OF THE SINE OF THE ANGLE OF INCIDENCE TO THE SINE OF ANGLE OF REFRACTION IS ALWAYS A CONSTANT FOR A GIVEN PAIR OF MEDIA
ANS 2-THE PHENOMENA OF BENDING OF LIGHT WHEN IT TRAVELS FROM ONE TRANSPARENT MEDIUM TO ANOTHER TRANSPARENT MEDIUM OF DIFFERENT DENSITY AT THE SURFACE OF SEPERATION OF TWO MEDIA IS CALLED REFRACTION.

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The incident ray after bending at the surface of separation is called a refracted ray.

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Ans 1. The incident ray, normal at the point of incidence and the refracted ray all lie on the same plane. The ratio of the sine of angle of incidence to the sine of angle of refraction is always a constant.

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1)The incident ray,normal at the point of incidence and the refracted ray all lie on the same plane
2)The ratio of the sine of angle of incidence to the sine of angle of refraction is always a constant

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When incident ray bend at the point of incidence after bending at the surface of separation is called refracted ray

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Ans1 the incident ray, the normal at the point of  incidence and the refractive ray all lies on the same plane
2 for a given  pair of media of different densities the ratio of sine i to the sine r is always constant
Ans2

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Laws of refraction are
The incident ray ,normal at the point of incidence and the refracted ray all lie on the same plane
The ratio of the sin of angle of incidence to the sin of angle of refraction is always constant

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Ans..i)The incident ray, normal at  point of incidence and the refracted ray all lie on the same plane.
The ratio of sine of angle of incidence to sine of angle of refraction is constant.
Ans ii)The incident ray bends at point of incidence, the ray that represents path of light after bending at surface of separation.

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1)The incident ray, the normal at the point of incidence and the refracted ray all lie on the same plane.
2)The ratio of sine of angle of incidence to the sine of angle of refraction is always a constant.

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1. The normal At the point of incidence, the incident ray , the refracted ray all lie in the same plane
2. For a given pair of media of different densities, the ratio of the sine of angle of incidence to the sine of the angle of refraction is always constant, that is sin I / sin r = constant

Ans 2. The incident ray bends at the point of incidence. The path of light after bending at the point of of incidence is known as the refracted ray

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The incident ray , the normal at the point of incidence and the refracted ray lie on the same plane....
2) ratio of Sin of angle of incidence and sin of angle of refraction is constant
sin i
-----    = constant
sin r

The ray after bending at the surface of seperation is called refracted ray