Science, asked by cool7lhareriyas, 1 year ago

Vertical shift in refraction of light

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Answered by prmkulk1978
5
Normal shift or vertical shift

When the object and the observer are in two different media,the image of the object appears like shifted from original position and it is called normal shift.
In this case we have to imagine the object in one medium and the observer in the other media. When we are seeing the object normally, image appears different from the position of the object. This is called normal shift.
When the object is in the denser medium and observer is in the rarer medium the first case is discussed.
case 1:
When the light Ray moves from the object towards the observer,As it is moving from denser medium to rarer medium,it moves away from the normal and angle of refraction is more than that of the angle of incidence. Therefore for the observer the object appears nearer to the surface. This we can notice even in the real life also. If a coin is placed in a glass of water, for a human eye the coin appears nearer than where it is.
case ii:
Similarly when the object is in the rarer medium and observer is in the denser medium it appears away from its original position and hence apparent height is more than that of the real height.



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