The deviation in the path of ray of light can be produced -a)By a glas...
This is because prism has 2 non parallel sides. When light pass from it different wavelength of light get differently deviated.
But in case of slab, sides are parallel and the light which enters get reversed when it comes out.
The deviation in the path of ray of light can be produced -a)By a glas...
The deviation in the path of a ray of light can be produced by a glass prism but not by a rectangular glass slab.
Explanation:
1. Refraction of Light:
When light travels from one medium to another, it undergoes a change in direction due to the change in its speed. This phenomenon is known as refraction of light.
2. Refraction through a Prism:
A glass prism is a three-dimensional object with two triangular faces and three rectangular faces. When a ray of light enters a prism, it undergoes refraction at each of its surfaces. The refraction of light at the first surface of the prism causes the ray to deviate towards the base of the prism. The second refraction at the second surface causes the ray to deviate away from the base of the prism. As a result, the ray of light emerges from the prism with an overall deviation.
3. The Angle of Deviation:
The angle of deviation is the angle between the incident ray and the emergent ray after passing through the prism. It is a measure of the amount of deviation caused by the prism. The angle of deviation depends on the refractive index of the prism material and the angle of incidence of the ray.
4. Refraction through a Rectangular Glass Slab:
A rectangular glass slab has two parallel rectangular faces. When a ray of light enters a rectangular glass slab, it undergoes refraction at each of its surfaces. However, since the faces of the slab are parallel, the ray of light emerges parallel to its incident direction. This means that there is no deviation in the path of the ray through the slab. The angle of deviation is zero.
5. Conclusion:
From the above explanation, it can be concluded that a glass prism can produce deviation in the path of a ray of light due to the refraction at its surfaces, whereas a rectangular glass slab does not produce any deviation in the path of the ray since its faces are parallel. Therefore, option 'A' is the correct answer.
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